diff --git a/content/base/test/test_bug320799.html b/content/base/test/test_bug320799.html
index 96185baf3e7d..c160283aba38 100644
--- a/content/base/test/test_bug320799.html
+++ b/content/base/test/test_bug320799.html
@@ -11,7 +11,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=320799
 <body>
 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=320799">Mozilla Bug 320799</a>
 <p id="display">
-  <select id="s" style="width: 100px; -moz-box-sizing: padding-box">
+  <select id="s" style="width: 100px; box-sizing: padding-box">
     <option>This is a test, it really is a test I tell you</option>
   </select>
   <select id="s2">
diff --git a/dom/tests/mochitest/general/test_bug861217.html b/dom/tests/mochitest/general/test_bug861217.html
index 937e54c84555..157487d9272b 100644
--- a/dom/tests/mochitest/general/test_bug861217.html
+++ b/dom/tests/mochitest/general/test_bug861217.html
@@ -24,16 +24,16 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=861217
         <td id="tableCell3" style="overflow: hidden"><div style="display: inline-block; margin-right: 8px; margin-bottom: 10px; width: 100px; height: 100px; background-color: Khaki">3</div></td>
       </tr>
       <tr>
-        <td id="tableCell4" style="overflow: hidden"><div style="display: inline-block; margin-right: 3px; margin-left: 1px; -moz-box-sizing: border-box; box-sizing: border-box; width: 100px; height: 100px; border-left: 6px solid black; border-bottom: 2px solid black; background-color: LightCoral">4</div></td>
+        <td id="tableCell4" style="overflow: hidden"><div style="display: inline-block; margin-right: 3px; margin-left: 1px; box-sizing: border-box; width: 100px; height: 100px; border-left: 6px solid black; border-bottom: 2px solid black; background-color: LightCoral">4</div></td>
       </tr>
       <tr>
         <td id="tableCell5" style="overflow: hidden"><div style="display: inline-block; border-right: 9px solid black; width: 100px; height: 100px; background-color: LightSeaGreen">5</div></td>
       </tr>
       <tr>
-        <td id="tableCell6" style="overflow: hidden"><div style="-moz-box-sizing: border-box; box-sizing: border-box; width: 100px; height: 100px; padding-top: 3px; padding-right: 13px; background-color: Orange">6</div></td>
+        <td id="tableCell6" style="overflow: hidden"><div style="box-sizing: border-box; width: 100px; height: 100px; padding-top: 3px; padding-right: 13px; background-color: Orange">6</div></td>
       </tr>
       <tr>
-        <td id="tableCell7" style="overflow: hidden"><div style="display: inline-block; margin-right: 11px; margin-left: 4px; -moz-box-sizing: border-box; box-sizing: border-box; width: 100px; height: 100px; border-right: 6px solid black; border-bottom: 8px solid black; padding-top: 5px; padding-right: 9px; padding-bottom: 8px; padding-left: 7px; background-color: Silver">7</div></td>
+        <td id="tableCell7" style="overflow: hidden"><div style="display: inline-block; margin-right: 11px; margin-left: 4px; box-sizing: border-box; width: 100px; height: 100px; border-right: 6px solid black; border-bottom: 8px solid black; padding-top: 5px; padding-right: 9px; padding-bottom: 8px; padding-left: 7px; background-color: Silver">7</div></td>
       </tr>
       <tr>
         <td id="tableCell8" style="overflow: hidden"><div style="display: inline-block; margin-top: 7px; margin-bottom: 1px; border-right: 6px solid black; border-bottom: 8px solid black; padding-top: 5px; padding-right: 9px; padding-bottom: 8px; padding-left: 7px; width: 100px; height: 100px; background-color: Turquoise">8</div></td>
diff --git a/dom/tests/mochitest/general/test_offsets.css b/dom/tests/mochitest/general/test_offsets.css
index f47b8b7de789..18231c4d9bd5 100644
--- a/dom/tests/mochitest/general/test_offsets.css
+++ b/dom/tests/mochitest/general/test_offsets.css
@@ -1,3 +1,3 @@
   button, vbox, menu, menuitem, menupopup  {
-    -moz-box-sizing: content-box;
+    box-sizing: content-box;
   }
diff --git a/dom/tests/mochitest/general/test_offsets.html b/dom/tests/mochitest/general/test_offsets.html
index a405bb9deda1..144eafd90861 100644
--- a/dom/tests/mochitest/general/test_offsets.html
+++ b/dom/tests/mochitest/general/test_offsets.html
@@ -8,7 +8,7 @@
 
 <style>
   input {
-    -moz-box-sizing: content-box;
+    box-sizing: content-box;
   }
 </style>
 </head>
diff --git a/layout/base/nsLayoutUtils.cpp b/layout/base/nsLayoutUtils.cpp
index 4326c9498f13..30242aa27c50 100644
--- a/layout/base/nsLayoutUtils.cpp
+++ b/layout/base/nsLayoutUtils.cpp
@@ -3030,7 +3030,7 @@ nsLayoutUtils::IntrinsicForContainer(nsRenderingContext *aRenderingContext,
     // -moz-fit-content and -moz-available enumerated widths compute intrinsic
     // widths just like auto.
     // For -moz-max-content and -moz-min-content, we handle them like
-    // specified widths, but ignore -moz-box-sizing.
+    // specified widths, but ignore box-sizing.
     boxSizing = NS_STYLE_BOX_SIZING_CONTENT;
   } else if (!styleWidth.ConvertsToLength() &&
              !(haveFixedMinWidth && haveFixedMaxWidth && maxw <= minw)) {
diff --git a/layout/base/nsLayoutUtils.h b/layout/base/nsLayoutUtils.h
index 482433e14b33..c97b23ca7601 100644
--- a/layout/base/nsLayoutUtils.h
+++ b/layout/base/nsLayoutUtils.h
@@ -1075,9 +1075,9 @@ public:
    * @param aFrame Frame whose (min-/max-/)width is being computed
    * @param aContainingBlockWidth Width of aFrame's containing block.
    * @param aContentEdgeToBoxSizing The sum of any left/right padding and
-   *          border that goes inside the rect chosen by -moz-box-sizing.
+   *          border that goes inside the rect chosen by box-sizing.
    * @param aBoxSizingToMarginEdge The sum of any left/right padding, border,
-   *          and margin that goes outside the rect chosen by -moz-box-sizing.
+   *          and margin that goes outside the rect chosen by box-sizing.
    * @param aCoord The width value to compute.
    */
   static nscoord ComputeWidthValue(
diff --git a/layout/doc/table_reflow_slides.html b/layout/doc/table_reflow_slides.html
index 2f59d5d99bc8..2bd863613d06 100644
--- a/layout/doc/table_reflow_slides.html
+++ b/layout/doc/table_reflow_slides.html
@@ -88,7 +88,7 @@
   table.box {
     border-collapse: collapse;
 	border: 2px solid black;
-	-moz-box-sizing: border-box;
+	box-sizing: border-box;
 	width:98%;
 	height:96%;
   }
diff --git a/layout/forms/test/test_textarea_resize.html b/layout/forms/test/test_textarea_resize.html
index f958734d9ac4..78b06d4097f6 100644
--- a/layout/forms/test/test_textarea_resize.html
+++ b/layout/forms/test/test_textarea_resize.html
@@ -10,7 +10,7 @@
 <div id="content" style="display: none">
 </div>
 
-<textarea id="textarea" style="-moz-appearance: none; border: 2px solid black; padding: 3px; -moz-box-sizing: border-box; min-width: 15px; min-height: 15px;">Text</textarea>
+<textarea id="textarea" style="-moz-appearance: none; border: 2px solid black; padding: 3px; box-sizing: border-box; min-width: 15px; min-height: 15px;">Text</textarea>
 
 <pre id="test">
 <script type="application/javascript">
diff --git a/layout/generic/crashtests/730559.html b/layout/generic/crashtests/730559.html
index 33c12a37cdeb..c9be8bc7a654 100644
--- a/layout/generic/crashtests/730559.html
+++ b/layout/generic/crashtests/730559.html
@@ -1 +1 @@
-<!DOCTYPE html><html style="height: 6523790304542em; width: 6207636626031em; -moz-box-sizing: border-box; border-style: dotted; -moz-column-width: 20px;"></html>
+<!DOCTYPE html><html style="height: 6523790304542em; width: 6207636626031em; box-sizing: border-box; border-style: dotted; -moz-column-width: 20px;"></html>
diff --git a/layout/generic/crashtests/810726-2.html b/layout/generic/crashtests/810726-2.html
index cff07dc171a4..cf757b0e4282 100644
--- a/layout/generic/crashtests/810726-2.html
+++ b/layout/generic/crashtests/810726-2.html
@@ -27,7 +27,7 @@
       .column {
         width: 73%;
         padding: 20px 60px 20px 40px;
-        -moz-box-sizing: border-box;
+        box-sizing: border-box;
         background-color: rgb(0, 95, 255);
       }
 
diff --git a/layout/generic/nsHTMLReflowState.cpp b/layout/generic/nsHTMLReflowState.cpp
index c29acfee5430..ac183456e1bc 100644
--- a/layout/generic/nsHTMLReflowState.cpp
+++ b/layout/generic/nsHTMLReflowState.cpp
@@ -994,7 +994,7 @@ GetIntrinsicSizeFor(nsIFrame* aFrame, nsSize& aIntrinsicSize, nsIAtom* aFrameTyp
 
 /**
  * aInsideBoxSizing returns the part of the horizontal padding, border,
- * and margin that goes inside the edge given by -moz-box-sizing;
+ * and margin that goes inside the edge given by box-sizing;
  * aOutsideBoxSizing returns the rest.
  */
 void
@@ -2263,7 +2263,7 @@ nsCSSOffsetState::InitOffsets(nscoord aHorizontalPercentBasis,
       // border-collapsed tables don't use any of their padding, and
       // only part of their border.  We need to do this here before we
       // try to do anything like handling 'auto' widths,
-      // '-moz-box-sizing', or 'auto' margins.
+      // 'box-sizing', or 'auto' margins.
       ComputedPhysicalPadding().SizeTo(0,0,0,0);
       ComputedPhysicalBorderPadding() = tableFrame->GetIncludedOuterBCBorder();
     }
diff --git a/layout/reftests/border-image/side-scaling-1h-ref.html b/layout/reftests/border-image/side-scaling-1h-ref.html
index 2a66ac1e1059..2b306c385aa2 100644
--- a/layout/reftests/border-image/side-scaling-1h-ref.html
+++ b/layout/reftests/border-image/side-scaling-1h-ref.html
@@ -5,7 +5,7 @@
 span {
   display: inline-block;
   margin: 10px;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   height: 24px;
   border-style: solid;
   border-color: transparent;
diff --git a/layout/reftests/border-image/side-scaling-1h.html b/layout/reftests/border-image/side-scaling-1h.html
index edf1bb4cb0d7..6ad0369af93c 100644
--- a/layout/reftests/border-image/side-scaling-1h.html
+++ b/layout/reftests/border-image/side-scaling-1h.html
@@ -5,7 +5,7 @@
 span {
   display: inline-block;
   margin: 10px;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   height: 24px;
   border-style: solid;
   border-color: transparent;
diff --git a/layout/reftests/border-image/side-scaling-1v-ref.html b/layout/reftests/border-image/side-scaling-1v-ref.html
index 314a029a28f5..735ecf3cfa04 100644
--- a/layout/reftests/border-image/side-scaling-1v-ref.html
+++ b/layout/reftests/border-image/side-scaling-1v-ref.html
@@ -5,7 +5,7 @@
 span {
   display: inline-block;
   margin: 5px;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   width: 13px;
   border-style: solid;
   border-color: transparent;
diff --git a/layout/reftests/border-image/side-scaling-1v.html b/layout/reftests/border-image/side-scaling-1v.html
index 92048a2e59cb..b3c99f6a2832 100644
--- a/layout/reftests/border-image/side-scaling-1v.html
+++ b/layout/reftests/border-image/side-scaling-1v.html
@@ -5,7 +5,7 @@
 span {
   display: inline-block;
   margin: 5px;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   width: 13px;
   border-style: solid;
   border-color: transparent;
diff --git a/layout/reftests/border-radius/border-reduce-height-ref.html b/layout/reftests/border-radius/border-reduce-height-ref.html
index e7d28fcac314..0c28216daca8 100644
--- a/layout/reftests/border-radius/border-reduce-height-ref.html
+++ b/layout/reftests/border-radius/border-reduce-height-ref.html
@@ -1,8 +1,7 @@
 <html>
   <head>
     <style>
-      div { -moz-box-sizing: border-box;
-            box-sizing: border-box;
+      div { box-sizing: border-box;
             width: 60px;
             height: 20px;
             border: 2px solid black;
diff --git a/layout/reftests/border-radius/border-reduce-height.html b/layout/reftests/border-radius/border-reduce-height.html
index c6d9a0de6977..db0310a6ba25 100644
--- a/layout/reftests/border-radius/border-reduce-height.html
+++ b/layout/reftests/border-radius/border-reduce-height.html
@@ -1,8 +1,7 @@
 <html>
   <head>
     <style>
-      div { -moz-box-sizing: border-box;
-            box-sizing: border-box;
+      div { box-sizing: border-box;
             width: 60px;
             height: 20px;
             border: 2px solid black;
diff --git a/layout/reftests/border-radius/curved-stripe-border.html b/layout/reftests/border-radius/curved-stripe-border.html
index c24f748b9e36..1f962765d195 100644
--- a/layout/reftests/border-radius/curved-stripe-border.html
+++ b/layout/reftests/border-radius/curved-stripe-border.html
@@ -4,7 +4,7 @@
 <style>
 body { margin: 0 }
 div {
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   width: 180px;
   height: 180px;
   border: 30px double black;
diff --git a/layout/reftests/box-properties/box-sizing-1-ref.html b/layout/reftests/box-properties/box-sizing-1-ref.html
index 2234306fe31f..f2caba6be740 100644
--- a/layout/reftests/box-properties/box-sizing-1-ref.html
+++ b/layout/reftests/box-properties/box-sizing-1-ref.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -35,7 +35,7 @@
 
 <td id="bscontent"><div>
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <div style="width: 37px">A B</div>
 <div style="width: auto">A B</div>
 <div style="width: auto">A<br>B</div>
@@ -47,7 +47,7 @@
 </div></td>
 
 <td id="bspadding"><div>
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <div style="width: 37px">A B</div>
 <div style="width: auto">A B</div>
 <div style="width: auto">A<br>B</div>
@@ -59,7 +59,7 @@
 </div></td>
 
 <td id="bsborder"><div>
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <div style="width: 37px">A B</div>
 <div style="width: auto">A B</div>
 <div style="width: auto">A<br>B</div>
diff --git a/layout/reftests/box-properties/box-sizing-1.html b/layout/reftests/box-properties/box-sizing-1.html
index fd1547264bc9..21653296cb90 100644
--- a/layout/reftests/box-properties/box-sizing-1.html
+++ b/layout/reftests/box-properties/box-sizing-1.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -12,9 +12,9 @@
 
     td > div { width: 100px; }
 
-    td#bscontent > div > div { -moz-box-sizing: content-box; }
-    td#bspadding > div > div { -moz-box-sizing: padding-box; }
-    td#bsborder > div > div { -moz-box-sizing: border-box; }
+    td#bscontent > div > div { box-sizing: content-box; }
+    td#bspadding > div > div { box-sizing: padding-box; }
+    td#bsborder > div > div { box-sizing: border-box; }
 
     td > div > div {
       margin-left: 1px;
@@ -36,7 +36,7 @@
 
 <td id="bscontent"><div>
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
@@ -48,7 +48,7 @@
 </div></td>
 
 <td id="bspadding"><div>
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
@@ -60,7 +60,7 @@
 </div></td>
 
 <td id="bsborder"><div>
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
diff --git a/layout/reftests/box-properties/box-sizing-2-ref.html b/layout/reftests/box-properties/box-sizing-2-ref.html
index 3b5325f65028..159c446d7ffe 100644
--- a/layout/reftests/box-properties/box-sizing-2-ref.html
+++ b/layout/reftests/box-properties/box-sizing-2-ref.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -29,7 +29,7 @@
 
 <td id="bscontent">
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <table><tr><td><div>A B</div></td></tr></table>
 <table><tr><td><div>A B</div></td></tr></table>
 <table><tr><td><div>A<br>B</div></td></tr></table>
@@ -40,7 +40,7 @@
 </td>
 
 <td id="bspadding">
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <table><tr><td><div>A B</div></td></tr></table>
 <table><tr><td><div>A B</div></td></tr></table>
 <table><tr><td><div>A<br>B</div></td></tr></table>
@@ -51,7 +51,7 @@
 </td>
 
 <td id="bsborder">
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <table><tr><td><div>A B</div></td></tr></table>
 <table><tr><td><div>A B</div></td></tr></table>
 <table><tr><td><div>A<br>B</div></td></tr></table>
diff --git a/layout/reftests/box-properties/box-sizing-2.html b/layout/reftests/box-properties/box-sizing-2.html
index 06919e6d26ac..65585b091d3b 100644
--- a/layout/reftests/box-properties/box-sizing-2.html
+++ b/layout/reftests/box-properties/box-sizing-2.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -10,9 +10,9 @@
     table { border-spacing: 0; margin: 0; }
     td { border: 1px solid; padding: 1px solid; }
 
-    td#bscontent td > div { -moz-box-sizing: content-box; }
-    td#bspadding td > div { -moz-box-sizing: padding-box; }
-    td#bsborder td > div { -moz-box-sizing: border-box; }
+    td#bscontent td > div { box-sizing: content-box; }
+    td#bspadding td > div { box-sizing: padding-box; }
+    td#bsborder td > div { box-sizing: border-box; }
 
     td td > div {
       margin-left: 1px;
@@ -33,7 +33,7 @@
 
 <td id="bscontent">
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <table><tr><td><div style="width: auto">A B</div></td></tr></table>
 <table><tr><td><div style="width: -moz-max-content">A B</div></td></tr></table>
 <table><tr><td><div style="width: -moz-min-content">A B</div></td></tr></table>
@@ -44,7 +44,7 @@
 </td>
 
 <td id="bspadding">
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <table><tr><td><div style="width: auto">A B</div></td></tr></table>
 <table><tr><td><div style="width: -moz-max-content">A B</div></td></tr></table>
 <table><tr><td><div style="width: -moz-min-content">A B</div></td></tr></table>
@@ -55,7 +55,7 @@
 </td>
 
 <td id="bsborder">
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <table><tr><td><div style="width: auto">A B</div></td></tr></table>
 <table><tr><td><div style="width: -moz-max-content">A B</div></td></tr></table>
 <table><tr><td><div style="width: -moz-min-content">A B</div></td></tr></table>
diff --git a/layout/reftests/box-properties/box-sizing-3.html b/layout/reftests/box-properties/box-sizing-3.html
index f29d00277c58..30f38884fde8 100644
--- a/layout/reftests/box-properties/box-sizing-3.html
+++ b/layout/reftests/box-properties/box-sizing-3.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -12,9 +12,9 @@
 
     td > div { width: 100px; }
 
-    td#bscontent > div > div { -moz-box-sizing: content-box; }
-    td#bspadding > div > div { -moz-box-sizing: padding-box; }
-    td#bsborder > div > div { -moz-box-sizing: border-box; }
+    td#bscontent > div > div { box-sizing: content-box; }
+    td#bspadding > div > div { box-sizing: padding-box; }
+    td#bsborder > div > div { box-sizing: border-box; }
 
     td > div > div {
       margin-left: 1%;
@@ -36,7 +36,7 @@
 
 <td id="bscontent"><div>
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
@@ -48,7 +48,7 @@
 </div></td>
 
 <td id="bspadding"><div>
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
@@ -60,7 +60,7 @@
 </div></td>
 
 <td id="bsborder"><div>
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
diff --git a/layout/reftests/box-properties/box-sizing-4-ref.html b/layout/reftests/box-properties/box-sizing-4-ref.html
index ddbc1239002f..47a438775eaf 100644
--- a/layout/reftests/box-properties/box-sizing-4-ref.html
+++ b/layout/reftests/box-properties/box-sizing-4-ref.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -37,7 +37,7 @@
 
 <td id="bscontent"><div>
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <div>A B</div>
 <div>A B</div>
 <div>A<br>B</div>
@@ -49,7 +49,7 @@
 </div></td>
 
 <td id="bspadding"><div>
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <div>A B</div>
 <div>A B</div>
 <div>A<br>B</div>
@@ -61,7 +61,7 @@
 </div></td>
 
 <td id="bsborder"><div>
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <div>A B</div>
 <div>A B</div>
 <div>A<br>B</div>
diff --git a/layout/reftests/box-properties/box-sizing-4.html b/layout/reftests/box-properties/box-sizing-4.html
index 3a383dddf964..8622508c99a9 100644
--- a/layout/reftests/box-properties/box-sizing-4.html
+++ b/layout/reftests/box-properties/box-sizing-4.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-  <title>test of -moz-box-sizing</title>
+  <title>test of box-sizing</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta http-equiv="Content-Style-Type" content="text/css">
   <style type="text/css">
@@ -13,9 +13,9 @@
     td > div { width: 100px; height: 350px;
                direction: rtl; position: relative; }
 
-    td#bscontent > div > div { -moz-box-sizing: content-box; }
-    td#bspadding > div > div { -moz-box-sizing: padding-box; }
-    td#bsborder > div > div { -moz-box-sizing: border-box; }
+    td#bscontent > div > div { box-sizing: content-box; }
+    td#bspadding > div > div { box-sizing: padding-box; }
+    td#bsborder > div > div { box-sizing: border-box; }
 
     td > div > div {
       margin-left: 1px;
@@ -48,7 +48,7 @@
 
 <td id="bscontent"><div>
 
-<!-- -moz-box-sizing: content-box -->
+<!-- box-sizing: content-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
@@ -60,7 +60,7 @@
 </div></td>
 
 <td id="bspadding"><div>
-<!-- -moz-box-sizing: padding-box -->
+<!-- box-sizing: padding-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
@@ -72,7 +72,7 @@
 </div></td>
 
 <td id="bsborder"><div>
-<!-- -moz-box-sizing: border-box -->
+<!-- box-sizing: border-box -->
 <div style="width: auto">A B</div>
 <div style="width: -moz-max-content">A B</div>
 <div style="width: -moz-min-content">A B</div>
diff --git a/layout/reftests/box-properties/box-sizing-minmax-height.html b/layout/reftests/box-properties/box-sizing-minmax-height.html
index 20232896bfc8..2a745fca0df0 100644
--- a/layout/reftests/box-properties/box-sizing-minmax-height.html
+++ b/layout/reftests/box-properties/box-sizing-minmax-height.html
@@ -18,7 +18,6 @@
 
         .box {
             box-sizing: border-box;
-            -moz-box-sizing: border-box;
         }
 
         .test1 {
diff --git a/layout/reftests/box-properties/box-sizing-minmax-width.html b/layout/reftests/box-properties/box-sizing-minmax-width.html
index 5155f530ac9a..d5ec53110823 100644
--- a/layout/reftests/box-properties/box-sizing-minmax-width.html
+++ b/layout/reftests/box-properties/box-sizing-minmax-width.html
@@ -18,7 +18,6 @@
 
         .box {
             box-sizing: border-box;
-            -moz-box-sizing: border-box;
         }
 
         .test1 {
diff --git a/layout/reftests/box-properties/box-sizing-mozbox-minmax-height-ref.html b/layout/reftests/box-properties/box-sizing-mozbox-minmax-height-ref.html
index baf38ca7bac5..26f7be165000 100644
--- a/layout/reftests/box-properties/box-sizing-mozbox-minmax-height-ref.html
+++ b/layout/reftests/box-properties/box-sizing-mozbox-minmax-height-ref.html
@@ -18,13 +18,11 @@ hbox {
   background:lime;
 
   box-sizing:content-box;
-  -moz-box-sizing:content-box;
 }
 
 .cb {
   background:pink;
   box-sizing:border-box;
-  -moz-box-sizing:border-box;
 }
 
 .pb {
diff --git a/layout/reftests/box-properties/box-sizing-mozbox-minmax-height.html b/layout/reftests/box-properties/box-sizing-mozbox-minmax-height.html
index bcbdddc66905..b050bf13501f 100644
--- a/layout/reftests/box-properties/box-sizing-mozbox-minmax-height.html
+++ b/layout/reftests/box-properties/box-sizing-mozbox-minmax-height.html
@@ -17,19 +17,16 @@ hbox {
   padding-bottom:4px;
   height:auto;
   box-sizing:border-box;
-  -moz-box-sizing:border-box;
   background:lime;
 }
 
 .cb {
   box-sizing:content-box;
-  -moz-box-sizing:content-box;
   background:pink;
 }
 
 .pb {
   box-sizing:padding-box;
-  -moz-box-sizing:padding-box;
   background:cyan;
 }
 
diff --git a/layout/reftests/box-properties/width-special-values-block.html b/layout/reftests/box-properties/width-special-values-block.html
index 116595b47363..b802f487dead 100644
--- a/layout/reftests/box-properties/width-special-values-block.html
+++ b/layout/reftests/box-properties/width-special-values-block.html
@@ -25,9 +25,9 @@
     div.v3 { width: -moz-fit-content; }
     div.v4 { width: -moz-available; }
 
-    div.s1 { -moz-box-sizing: content; }
-    div.s2 { -moz-box-sizing: padding; }
-    div.s3 { -moz-box-sizing: border; }
+    div.s1 { box-sizing: content; }
+    div.s2 { box-sizing: padding; }
+    div.s3 { box-sizing: border; }
 
   </style>
 </head>
diff --git a/layout/reftests/box-properties/width-special-values-float.html b/layout/reftests/box-properties/width-special-values-float.html
index 10eff322b5fe..1c5056907229 100644
--- a/layout/reftests/box-properties/width-special-values-float.html
+++ b/layout/reftests/box-properties/width-special-values-float.html
@@ -27,9 +27,9 @@
     div.v3 { width: -moz-fit-content; }
     div.v4 { width: -moz-available; }
 
-    div.s1 { -moz-box-sizing: content; }
-    div.s2 { -moz-box-sizing: padding; }
-    div.s3 { -moz-box-sizing: border; }
+    div.s1 { box-sizing: content; }
+    div.s2 { box-sizing: padding; }
+    div.s3 { box-sizing: border; }
 
   </style>
 </head>
diff --git a/layout/reftests/box-properties/width-special-values-image-block-ref.html b/layout/reftests/box-properties/width-special-values-image-block-ref.html
index 2fd690cc2d54..6aee205fd019 100644
--- a/layout/reftests/box-properties/width-special-values-image-block-ref.html
+++ b/layout/reftests/box-properties/width-special-values-image-block-ref.html
@@ -14,7 +14,7 @@
       padding-right: 8px;
       border-right: 16px solid;
       margin-right: 32px;
-      -moz-box-sizing: content;
+      box-sizing: content;
       margin-bottom: 1px;
     }
 
diff --git a/layout/reftests/box-properties/width-special-values-image-block.html b/layout/reftests/box-properties/width-special-values-image-block.html
index c5d300aad3af..11425ca6c001 100644
--- a/layout/reftests/box-properties/width-special-values-image-block.html
+++ b/layout/reftests/box-properties/width-special-values-image-block.html
@@ -22,9 +22,9 @@
     img.v3 { width: -moz-fit-content; }
     img.v4 { width: -moz-available; }
 
-    img.s1 { -moz-box-sizing: content; }
-    img.s2 { -moz-box-sizing: padding; }
-    img.s3 { -moz-box-sizing: border; }
+    img.s1 { box-sizing: content; }
+    img.s2 { box-sizing: padding; }
+    img.s3 { box-sizing: border; }
 
   </style>
 </head>
diff --git a/layout/reftests/box-properties/width-special-values-image-ref.html b/layout/reftests/box-properties/width-special-values-image-ref.html
index 28458d353ef6..3a874b7d05e3 100644
--- a/layout/reftests/box-properties/width-special-values-image-ref.html
+++ b/layout/reftests/box-properties/width-special-values-image-ref.html
@@ -13,7 +13,7 @@
       padding-right: 8px;
       border-right: 16px solid;
       margin-right: 32px;
-      -moz-box-sizing: content;
+      box-sizing: content;
       margin-bottom: 1px;
     }
 
diff --git a/layout/reftests/box-properties/width-special-values-image.html b/layout/reftests/box-properties/width-special-values-image.html
index 1dadcdc50c48..46a8e58a71f5 100644
--- a/layout/reftests/box-properties/width-special-values-image.html
+++ b/layout/reftests/box-properties/width-special-values-image.html
@@ -21,9 +21,9 @@
     img.v3 { width: -moz-fit-content; }
     img.v4 { width: -moz-available; }
 
-    img.s1 { -moz-box-sizing: content; }
-    img.s2 { -moz-box-sizing: padding; }
-    img.s3 { -moz-box-sizing: border; }
+    img.s1 { box-sizing: content; }
+    img.s2 { box-sizing: padding; }
+    img.s3 { box-sizing: border; }
 
   </style>
 </head>
diff --git a/layout/reftests/box-shadow/611574-1-ref.html b/layout/reftests/box-shadow/611574-1-ref.html
index 66aaa300de54..ab2ee14c2c1a 100644
--- a/layout/reftests/box-shadow/611574-1-ref.html
+++ b/layout/reftests/box-shadow/611574-1-ref.html
@@ -18,41 +18,41 @@ button,span,fieldset { background-color: #0F0; }
 
 <p><span>No Blur Radius</span>
 <p><span>No Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; ">No Blur Radius</span>
+<p><span style="box-sizing:border-box;">No Blur Radius</span>
 <p><span>No Blur Radius</span>
 <p><span>No Blur Radius</span>
 
 <p><span>2px Blur Radius</span>
 <p><span>2px Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; ">2px Blur Radius</span>
+<p><span style="box-sizing:border-box;">2px Blur Radius</span>
 <p><span>2px Blur Radius</span>
 <p><span>2px Blur Radius</span>
 
 <p><fieldset>No Blur Radius</fieldset>
 <p><fieldset><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset>No Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; ">No Blur Radius</fieldset>
+<p><fieldset style="box-sizing:border-box;">No Blur Radius</fieldset>
 <p><fieldset>No Blur Radius</fieldset>
 <p><fieldset>No Blur Radius</fieldset>
 
 <p><fieldset>2px Blur Radius</fieldset>
 <p><fieldset><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset>2px Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; ">2px Blur Radius</fieldset>
+<p><fieldset style="box-sizing:border-box;">2px Blur Radius</fieldset>
 <p><fieldset>2px Blur Radius</fieldset>
 <p><fieldset>2px Blur Radius</fieldset>
 
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;"><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
-<p><fieldset style="display:inline; -moz-box-sizing:border-box; ">No Blur Radius</fieldset>
+<p><fieldset style="display:inline; box-sizing:border-box;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
 
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;"><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
-<p><fieldset style="display:inline; -moz-box-sizing:border-box; ">2px Blur Radius</fieldset>
+<p><fieldset style="display:inline; box-sizing:border-box;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
 
diff --git a/layout/reftests/box-shadow/611574-1.html b/layout/reftests/box-shadow/611574-1.html
index 3bb0e6885bd7..2b39778b3adc 100644
--- a/layout/reftests/box-shadow/611574-1.html
+++ b/layout/reftests/box-shadow/611574-1.html
@@ -18,41 +18,41 @@ button,span,fieldset { background-color: #0F0; }
 
 <p><span style="box-shadow: inset -20px 10px 0 #0F0;">No Blur Radius</span>
 <p><span style="box-shadow: inset  20px 10px 0 #0F0;">No Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</span>
+<p><span style="box-sizing: border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</span>
 <p><span style="box-shadow: inset 200px 100px 0 4px #0F0;">No Blur Radius</span>
 <p><span style="box-shadow: inset 200px -100px 0 4px #0F0;">No Blur Radius</span>
 
 <p><span style="box-shadow: inset -20px 10px 2px #0F0;">2px Blur Radius</span>
 <p><span style="box-shadow: inset  20px 10px 2px #0F0;">2px Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</span>
+<p><span style="box-sizing: border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</span>
 <p><span style="box-shadow: inset 200px 100px 2px 4px #0F0;">2px Blur Radius</span>
 <p><span style="box-shadow: inset 200px -100px 2px 4px #0F0;">2px Blur Radius</span>
 
 <p><fieldset style="box-shadow: inset -20px 10px 0 #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset -20px 10px 0 #0F0;"><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset  20px 10px 0 #0F0;">No Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
+<p><fieldset style="box-sizing: border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px 100px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px -100px 0 4px #0F0;">No Blur Radius</fieldset>
 
 <p><fieldset style="box-shadow: inset -20px 10px 2px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset -20px 10px 2px #0F0;"><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset  20px 10px 2px #0F0;">2px Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
+<p><fieldset style="box-sizing: border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px 100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px -100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 
 <p><fieldset style="display:inline; box-shadow: inset -20px 10px 0 #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset -20px 10px 0 #0F0;"><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset  20px 10px 0 #0F0;">No Blur Radius</fieldset>
-<p><fieldset style="display:inline;  -moz-box-sizing:border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
+<p><fieldset style="display:inline; box-sizing: border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset 200px 100px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset 200px -100px 0 4px #0F0;">No Blur Radius</fieldset>
 
 <p><fieldset style="display:inline; box-shadow: inset -20px 10px 2px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset -20px 10px 2px #0F0;"><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset  20px 10px 2px #0F0;">2px Blur Radius</fieldset>
-<p><fieldset style="display:inline;  -moz-box-sizing:border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
+<p><fieldset style="display:inline; box-sizing: border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset 200px 100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline; box-shadow: inset 200px -100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 
diff --git a/layout/reftests/box-shadow/611574-2-ref.html b/layout/reftests/box-shadow/611574-2-ref.html
index 09d56b993071..9d1c2357d660 100644
--- a/layout/reftests/box-shadow/611574-2-ref.html
+++ b/layout/reftests/box-shadow/611574-2-ref.html
@@ -20,13 +20,13 @@ button,span,fieldset { border-radius: 7px 3px;  background-color: #0F0; }
 <!--  XXX TODO: SPAN does not work due to differences in anti-aliasing with the test
 <p><span>No Blur Radius</span>
 <p><span>No Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; ">No Blur Radius</span>
+<p><span style="box-sizing:border-box;">No Blur Radius</span>
 <p><span>No Blur Radius</span>
 <p><span>No Blur Radius</span>
 
 <p><span>2px Blur Radius</span>
 <p><span>2px Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; ">2px Blur Radius</span>
+<p><span style="box-sizing:border-box;">2px Blur Radius</span>
 <p><span>2px Blur Radius</span>
 <p><span>2px Blur Radius</span>
 -->
@@ -34,28 +34,28 @@ button,span,fieldset { border-radius: 7px 3px;  background-color: #0F0; }
 <p><fieldset>No Blur Radius</fieldset>
 <p><fieldset><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset>No Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; ">No Blur Radius</fieldset>
+<p><fieldset style="box-sizing:border-box;">No Blur Radius</fieldset>
 <p><fieldset>No Blur Radius</fieldset>
 <p><fieldset>No Blur Radius</fieldset>
 
 <p><fieldset>2px Blur Radius</fieldset>
 <p><fieldset><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset>2px Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; ">2px Blur Radius</fieldset>
+<p><fieldset style="box-sizing:border-box;">2px Blur Radius</fieldset>
 <p><fieldset>2px Blur Radius</fieldset>
 <p><fieldset>2px Blur Radius</fieldset>
 
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;"><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
-<p><fieldset style="display:inline; -moz-box-sizing:border-box; ">No Blur Radius</fieldset>
+<p><fieldset style="display:inline; box-sizing:border-box;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;">No Blur Radius</fieldset>
 
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;"><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
-<p><fieldset style="display:inline; -moz-box-sizing:border-box; ">2px Blur Radius</fieldset>
+<p><fieldset style="display:inline; box-sizing:border-box;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;">2px Blur Radius</fieldset>
 
diff --git a/layout/reftests/box-shadow/611574-2.html b/layout/reftests/box-shadow/611574-2.html
index 103461294c1b..9469d1f36bba 100644
--- a/layout/reftests/box-shadow/611574-2.html
+++ b/layout/reftests/box-shadow/611574-2.html
@@ -20,13 +20,13 @@ button,span,fieldset { border-radius: 7px 3px;  background-color: #0F0; }
 <!--  XXX TODO: SPAN does not work due to differences in anti-aliasing with the reference
 <p><span style="box-shadow: inset -20px 10px 0 #0F0;">No Blur Radius</span>
 <p><span style="box-shadow: inset  20px 10px 0 #0F0;">No Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</span>
+<p><span style="box-sizing: border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</span>
 <p><span style="box-shadow: inset 200px 100px 0 4px #0F0;">No Blur Radius</span>
 <p><span style="box-shadow: inset 200px -100px 0 4px #0F0;">No Blur Radius</span>
 
 <p><span style="box-shadow: inset -20px 10px 2px #0F0;">2px Blur Radius</span>
 <p><span style="box-shadow: inset  20px 10px 2px #0F0;">2px Blur Radius</span>
-<p><span style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</span>
+<p><span style="box-sizing: border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</span>
 <p><span style="box-shadow: inset 200px 100px 2px 4px #0F0;">2px Blur Radius</span>
 <p><span style="box-shadow: inset 200px -100px 2px 4px #0F0;">2px Blur Radius</span>
 -->
@@ -34,28 +34,28 @@ button,span,fieldset { border-radius: 7px 3px;  background-color: #0F0; }
 <p><fieldset style="box-shadow: inset -20px 10px 0 #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset -20px 10px 0 #0F0;"><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset  20px 10px 0 #0F0;">No Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
+<p><fieldset style="box-sizing: border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px 100px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px -100px 0 4px #0F0;">No Blur Radius</fieldset>
 
 <p><fieldset style="box-shadow: inset -20px 10px 2px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset -20px 10px 2px #0F0;"><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset  20px 10px 2px #0F0;">2px Blur Radius</fieldset>
-<p><fieldset style="-moz-box-sizing:border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
+<p><fieldset style="box-sizing: border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px 100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="box-shadow: inset 200px -100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 
 <p><fieldset style="display:inline;box-shadow: inset -20px 10px 0 #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset -20px 10px 0 #0F0;"><legend>No</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset  20px 10px 0 #0F0;">No Blur Radius</fieldset>
-<p><fieldset style="display:inline;-moz-box-sizing:border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
+<p><fieldset style="display:inline;box-sizing: border-box; box-shadow: inset -20px 10px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset 200px 100px 0 4px #0F0;">No Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset 200px -100px 0 4px #0F0;">No Blur Radius</fieldset>
 
 <p><fieldset style="display:inline;box-shadow: inset -20px 10px 2px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset -20px 10px 2px #0F0;"><legend>2px</legend> Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset  20px 10px 2px #0F0;">2px Blur Radius</fieldset>
-<p><fieldset style="display:inline;-moz-box-sizing:border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
+<p><fieldset style="display:inline;box-sizing: border-box; box-shadow: inset -20px 10px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset 200px 100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 <p><fieldset style="display:inline;box-shadow: inset 200px -100px 2px 4px #0F0;">2px Blur Radius</fieldset>
 
diff --git a/layout/reftests/box-sizing/computed-size-reporting-ref.html b/layout/reftests/box-sizing/computed-size-reporting-ref.html
index 2ed1e370a5d5..0784b309e0fe 100644
--- a/layout/reftests/box-sizing/computed-size-reporting-ref.html
+++ b/layout/reftests/box-sizing/computed-size-reporting-ref.html
@@ -6,13 +6,13 @@
   #borderBox {
     background:gold;
     height:100px;
-    -moz-box-sizing:border-box;
+    box-sizing:border-box;
   }
 
   #paddingBox {
     background:gold;
     height:100px;
-    -moz-box-sizing:padding-box;
+    box-sizing:padding-box;
   }
 
 </style>
diff --git a/layout/reftests/box-sizing/computed-size-reporting.html b/layout/reftests/box-sizing/computed-size-reporting.html
index c68cb798533c..fbcd62577a1f 100644
--- a/layout/reftests/box-sizing/computed-size-reporting.html
+++ b/layout/reftests/box-sizing/computed-size-reporting.html
@@ -6,14 +6,14 @@
   #borderBox {
     background:gold;
     height:100px;
-    -moz-box-sizing:border-box;
+    box-sizing:border-box;
     border: 20px solid gold;
   }
 
   #paddingBox {
     background:gold;
     height:100px;
-    -moz-box-sizing:padding-box;
+    box-sizing:padding-box;
     padding: 20px;
   }
 
diff --git a/layout/reftests/box-sizing/intrinsic-1a.html b/layout/reftests/box-sizing/intrinsic-1a.html
index 98be35b0598b..b2e7ebf46c6a 100644
--- a/layout/reftests/box-sizing/intrinsic-1a.html
+++ b/layout/reftests/box-sizing/intrinsic-1a.html
@@ -4,7 +4,6 @@
     <img src="lime100x100.png"
          style="height: 200px; display: block; visibility: hidden;
                 padding: 30px;
-                -moz-box-sizing: padding-box;
                 box-sizing: padding-box;">
   </div>
 </body>
diff --git a/layout/reftests/box-sizing/intrinsic-1b.html b/layout/reftests/box-sizing/intrinsic-1b.html
index e8a537cda8bf..398b2e37a8db 100644
--- a/layout/reftests/box-sizing/intrinsic-1b.html
+++ b/layout/reftests/box-sizing/intrinsic-1b.html
@@ -4,7 +4,6 @@
     <img src="lime100x100.png"
          style="height: 200px; display: block; visibility: hidden;
                 padding: 15% 30px;
-                -moz-box-sizing: padding-box;
                 box-sizing: padding-box;">
   </div>
 </body>
diff --git a/layout/reftests/box-sizing/intrinsic-1c.html b/layout/reftests/box-sizing/intrinsic-1c.html
index 69b0003d6e8c..43febc053ef7 100644
--- a/layout/reftests/box-sizing/intrinsic-1c.html
+++ b/layout/reftests/box-sizing/intrinsic-1c.html
@@ -4,7 +4,6 @@
     <img src="lime100x100.png"
          style="height: 200px; display: block; visibility: hidden;
                 padding: 30px; border: 20px solid;
-                -moz-box-sizing: border-box;
                 box-sizing: border-box;">
   </div>
 </body>
diff --git a/layout/reftests/box-sizing/intrinsic-1d.html b/layout/reftests/box-sizing/intrinsic-1d.html
index ab55828d69cb..6865d0b499c3 100644
--- a/layout/reftests/box-sizing/intrinsic-1d.html
+++ b/layout/reftests/box-sizing/intrinsic-1d.html
@@ -4,7 +4,6 @@
     <img src="lime100x100.png"
          style="height: 200px; display: block; visibility: hidden;
                 padding: calc(15%) 30px;
-                -moz-box-sizing: padding-box;
                 box-sizing: padding-box;">
   </div>
 </body>
diff --git a/layout/reftests/box-sizing/intrinsic-1e.html b/layout/reftests/box-sizing/intrinsic-1e.html
index 9fd03e2fda45..3b35b67544d5 100644
--- a/layout/reftests/box-sizing/intrinsic-1e.html
+++ b/layout/reftests/box-sizing/intrinsic-1e.html
@@ -4,7 +4,6 @@
     <img src="lime100x100.png"
          style="height: 200px; display: block; visibility: hidden;
                 padding: calc(10% + 10px) 30px;
-                -moz-box-sizing: padding-box;
                 box-sizing: padding-box;">
   </div>
 </body>
diff --git a/layout/reftests/box-sizing/intrinsic-1f.html b/layout/reftests/box-sizing/intrinsic-1f.html
index 75f70b0f8966..6301127267ae 100644
--- a/layout/reftests/box-sizing/intrinsic-1f.html
+++ b/layout/reftests/box-sizing/intrinsic-1f.html
@@ -4,7 +4,6 @@
     <img src="lime100x100.png"
          style="height: 200px; display: block; visibility: hidden;
                 padding: calc(30px);
-                -moz-box-sizing: padding-box;
                 box-sizing: padding-box;">
   </div>
 </body>
diff --git a/layout/reftests/bugs/130767-1-ref.html b/layout/reftests/bugs/130767-1-ref.html
index e1809f359f10..51912007fb06 100644
--- a/layout/reftests/bugs/130767-1-ref.html
+++ b/layout/reftests/bugs/130767-1-ref.html
@@ -4,6 +4,6 @@
   <title>Bug 130767 Reference</title>
 </head>
 <body style="padding: 2%">
-<table style="background-color: blue; height: 3em; -moz-box-sizing: border-box; box-sizing: border-box; width: 100%;"><tr><td>&nbsp;</td></tr></table>
+<table style="background-color: blue; height: 3em; box-sizing: border-box; width: 100%;"><tr><td>&nbsp;</td></tr></table>
 </body>
 </html>
diff --git a/layout/reftests/bugs/363858-5-ref.html b/layout/reftests/bugs/363858-5-ref.html
index 881aaed13ca0..67f215f10966 100644
--- a/layout/reftests/bugs/363858-5-ref.html
+++ b/layout/reftests/bugs/363858-5-ref.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <style>
-select { width: 100%; -moz-box-sizing: border-box }
+select { width: 100%; box-sizing: border-box }
 </style>
 </head>
 <body>
diff --git a/layout/reftests/bugs/363858-6-ref.html b/layout/reftests/bugs/363858-6-ref.html
index 81784afcebe5..7a583c79e129 100644
--- a/layout/reftests/bugs/363858-6-ref.html
+++ b/layout/reftests/bugs/363858-6-ref.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <style>
-select { width: 100%; -moz-box-sizing: border-box }
+select { width: 100%; box-sizing: border-box }
 * { -moz-appearance: none; }
 </style>
 </head>
diff --git a/layout/reftests/bugs/379349-1-ref.xhtml b/layout/reftests/bugs/379349-1-ref.xhtml
index 15412bffe662..ed77845b62fb 100644
--- a/layout/reftests/bugs/379349-1-ref.xhtml
+++ b/layout/reftests/bugs/379349-1-ref.xhtml
@@ -15,7 +15,7 @@
       position: absolute;
       top: 0; left: 0;
       margin: 0;
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
       width: 100pt;
       height: 72pt;
       background: white;
diff --git a/layout/reftests/bugs/494667-1.html b/layout/reftests/bugs/494667-1.html
index 076ff652176d..fed4c9baae49 100644
--- a/layout/reftests/bugs/494667-1.html
+++ b/layout/reftests/bugs/494667-1.html
@@ -10,7 +10,7 @@ td, th {
   background-color: lime;
   width:100px;
   height:100px;
-  -moz-box-sizing:border-box;
+  box-sizing:border-box;
 }
 td {
   border-top: 4px solid lime;
diff --git a/layout/reftests/bugs/494667-2.html b/layout/reftests/bugs/494667-2.html
index 061f8f0da30f..98f336859681 100644
--- a/layout/reftests/bugs/494667-2.html
+++ b/layout/reftests/bugs/494667-2.html
@@ -11,7 +11,7 @@ td, th {
   width:100px;
   height:100px;
   border:4px solid lime;
-  -moz-box-sizing:border-box;
+  box-sizing:border-box;
 }
 td {
   border-top:hidden;
diff --git a/layout/reftests/bugs/776265-1a.html b/layout/reftests/bugs/776265-1a.html
index 2a9767abacb0..a22867dc1012 100644
--- a/layout/reftests/bugs/776265-1a.html
+++ b/layout/reftests/bugs/776265-1a.html
@@ -10,8 +10,6 @@ textarea {
     min-height: 50px;
     border: 1px solid #aaa;
     padding: 4px;
-    -moz-box-sizing: border-box;
-    -webkit-box-sizing: border-box;
     box-sizing: border-box;
 }
 </style>
diff --git a/layout/reftests/bugs/776265-1b.html b/layout/reftests/bugs/776265-1b.html
index a7eebd496007..c99f00dc32d6 100644
--- a/layout/reftests/bugs/776265-1b.html
+++ b/layout/reftests/bugs/776265-1b.html
@@ -10,8 +10,6 @@ textarea {
     max-height: 50px;
     border: 1px solid #aaa;
     padding: 4px;
-    -moz-box-sizing: border-box;
-    -webkit-box-sizing: border-box;
     box-sizing: border-box;
 }
 </style>
diff --git a/layout/reftests/bugs/776265-1c.html b/layout/reftests/bugs/776265-1c.html
index 426c6815753f..9f956b130cc3 100644
--- a/layout/reftests/bugs/776265-1c.html
+++ b/layout/reftests/bugs/776265-1c.html
@@ -10,8 +10,6 @@ textarea {
     min-width: 50px;
     border: 1px solid #aaa;
     padding: 4px;
-    -moz-box-sizing: border-box;
-    -webkit-box-sizing: border-box;
     box-sizing: border-box;
 }
 </style>
diff --git a/layout/reftests/bugs/776265-1d.html b/layout/reftests/bugs/776265-1d.html
index 94c297184897..b6ade169289c 100644
--- a/layout/reftests/bugs/776265-1d.html
+++ b/layout/reftests/bugs/776265-1d.html
@@ -10,8 +10,6 @@ textarea {
     max-width: 50px;
     border: 1px solid #aaa;
     padding: 4px;
-    -moz-box-sizing: border-box;
-    -webkit-box-sizing: border-box;
     box-sizing: border-box;
 }
 </style>
diff --git a/layout/reftests/bugs/825999-ref.html b/layout/reftests/bugs/825999-ref.html
index efc512530f6d..1e62137670c4 100644
--- a/layout/reftests/bugs/825999-ref.html
+++ b/layout/reftests/bugs/825999-ref.html
@@ -31,10 +31,10 @@
                 width:36px;
             }
             .bb * {
-                -moz-box-sizing: border-box;
+                box-sizing: border-box;
             }
             .cb * {
-                -moz-box-sizing: content-box;
+                box-sizing: content-box;
             }
             td {
               max-width:14px;
diff --git a/layout/reftests/bugs/825999.html b/layout/reftests/bugs/825999.html
index b3d4b24ad1ad..eef708f888f3 100644
--- a/layout/reftests/bugs/825999.html
+++ b/layout/reftests/bugs/825999.html
@@ -31,10 +31,10 @@
                 width:36px;
             }
             .bb * {
-                -moz-box-sizing: border-box;
+                box-sizing: border-box;
             }
             .cb * {
-                -moz-box-sizing: content-box;
+                box-sizing: content-box;
             }
             td {
               max-width:14px;
diff --git a/layout/reftests/bugs/860242-1-ref.html b/layout/reftests/bugs/860242-1-ref.html
index cccdeeefd255..36d8738bef11 100644
--- a/layout/reftests/bugs/860242-1-ref.html
+++ b/layout/reftests/bugs/860242-1-ref.html
@@ -11,7 +11,6 @@
       }
 
       .table > * {
-        -moz-box-sizing: border-box;
         box-sizing: border-box;
         display: table-cell;
         height: 30px;
diff --git a/layout/reftests/bugs/860242-1.html b/layout/reftests/bugs/860242-1.html
index ea5c9fff92dd..1e8012efa968 100644
--- a/layout/reftests/bugs/860242-1.html
+++ b/layout/reftests/bugs/860242-1.html
@@ -11,7 +11,6 @@
       }
 
       .table > * {
-        -moz-box-sizing: border-box;
         box-sizing: border-box;
         display: table-cell;
         height: 30px;
diff --git a/layout/reftests/counters/counter-suffix-ref.html b/layout/reftests/counters/counter-suffix-ref.html
index 8ec221a19031..71eec37d9c49 100644
--- a/layout/reftests/counters/counter-suffix-ref.html
+++ b/layout/reftests/counters/counter-suffix-ref.html
@@ -6,7 +6,7 @@
     display: inline-block;
     width: 3em;
     text-align: end;
-    -moz-box-sizing: border-box;
+    box-sizing: border-box;
   }
   .def span { -moz-padding-end: 0.5em; }
   .fix span { -moz-padding-end: 1em; }
diff --git a/layout/reftests/flexbox/flexbox-align-self-baseline-horiz-2.xhtml b/layout/reftests/flexbox/flexbox-align-self-baseline-horiz-2.xhtml
index b8e445215ebf..853f2c6ed01f 100644
--- a/layout/reftests/flexbox/flexbox-align-self-baseline-horiz-2.xhtml
+++ b/layout/reftests/flexbox/flexbox-align-self-baseline-horiz-2.xhtml
@@ -34,7 +34,7 @@
         padding: 0;
         height: 50px;
         width: 20px;
-        -moz-box-sizing: content-box;
+        box-sizing: content-box;
       }
 
       .lime   { background: lime;   }
diff --git a/layout/reftests/flexbox/flexbox-box-sizing-on-container-horiz-1.html b/layout/reftests/flexbox/flexbox-box-sizing-on-container-horiz-1.html
index 5577d3efeb4e..951cf918d6d8 100644
--- a/layout/reftests/flexbox/flexbox-box-sizing-on-container-horiz-1.html
+++ b/layout/reftests/flexbox/flexbox-box-sizing-on-container-horiz-1.html
@@ -14,7 +14,7 @@
       width: 110px;
       height: 30px;
       border: 5px solid black;
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
     }
     .itemA {
       flex: 1 28px;
diff --git a/layout/reftests/flexbox/flexbox-box-sizing-on-container-vert-1.html b/layout/reftests/flexbox/flexbox-box-sizing-on-container-vert-1.html
index 4eebed074a2d..2351369b39aa 100644
--- a/layout/reftests/flexbox/flexbox-box-sizing-on-container-vert-1.html
+++ b/layout/reftests/flexbox/flexbox-box-sizing-on-container-vert-1.html
@@ -15,7 +15,7 @@
       width: 30px;
       height: 110px;
       border: 5px solid black;
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
     }
     .itemA {
       flex: 1 28px;
diff --git a/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html b/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html
index 491d16557595..a74f4a81cf38 100644
--- a/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html
+++ b/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1a.html
@@ -18,7 +18,7 @@
       margin: 2px;
     }
     .container > * {
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
     }
     .itemA {
       width: 30px;
diff --git a/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1b.html b/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1b.html
index ee84b0d2427c..789dd14be0dd 100644
--- a/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1b.html
+++ b/layout/reftests/flexbox/flexbox-box-sizing-on-items-horiz-1b.html
@@ -18,7 +18,7 @@
       margin: 2px;
     }
     .container > * {
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
     }
     .itemA {
       flex-basis: 30px;
diff --git a/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1a.html b/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1a.html
index db263ed02b39..e87e93372aa0 100644
--- a/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1a.html
+++ b/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1a.html
@@ -19,7 +19,7 @@
       margin: 2px;
     }
     .container > * {
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
     }
     .itemA {
       height: 30px;
diff --git a/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1b.html b/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1b.html
index a972959e75b8..7edbf837863d 100644
--- a/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1b.html
+++ b/layout/reftests/flexbox/flexbox-box-sizing-on-items-vert-1b.html
@@ -19,7 +19,7 @@
       margin: 2px;
     }
     .container > * {
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
     }
     .itemA {
       flex-basis: 30px;
diff --git a/layout/reftests/forms/button/max-height-ref.html b/layout/reftests/forms/button/max-height-ref.html
index 37d922fe6f02..ea12a86681fd 100644
--- a/layout/reftests/forms/button/max-height-ref.html
+++ b/layout/reftests/forms/button/max-height-ref.html
@@ -5,7 +5,6 @@
     padding: 23px;
     border: 1px solid black;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
     overflow: hidden;
   }
 </style>
diff --git a/layout/reftests/forms/button/max-height.html b/layout/reftests/forms/button/max-height.html
index 0dc4ef7f5def..87ac8a979ccb 100644
--- a/layout/reftests/forms/button/max-height.html
+++ b/layout/reftests/forms/button/max-height.html
@@ -5,7 +5,6 @@
     padding: 23px;
     border: 1px solid black;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
     overflow: hidden;
   }
 </style>
diff --git a/layout/reftests/forms/input/color/reference-style.css b/layout/reftests/forms/input/color/reference-style.css
index 1c8463182630..188b12c3178d 100644
--- a/layout/reftests/forms/input/color/reference-style.css
+++ b/layout/reftests/forms/input/color/reference-style.css
@@ -4,7 +4,7 @@ div.input-color-swatch {
   height: 100%;
   min-width: 3px;
   min-height: 3px;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   border: 1px solid grey;
   display: block;
   background-color:#000000; /* default color for input type color */
diff --git a/layout/reftests/forms/meter/max-height-ref.html b/layout/reftests/forms/meter/max-height-ref.html
index f7592f51ac3b..be61638a7d4c 100644
--- a/layout/reftests/forms/meter/max-height-ref.html
+++ b/layout/reftests/forms/meter/max-height-ref.html
@@ -5,7 +5,6 @@
     padding: 23px;
     border: 1px solid black;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
     overflow: hidden;
   }
 </style>
diff --git a/layout/reftests/forms/meter/max-height.html b/layout/reftests/forms/meter/max-height.html
index a286a6650b12..ae6115f8556c 100644
--- a/layout/reftests/forms/meter/max-height.html
+++ b/layout/reftests/forms/meter/max-height.html
@@ -5,7 +5,6 @@
     padding: 23px;
     border: 1px solid black;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
     overflow: hidden;
   }
 </style>
diff --git a/layout/reftests/forms/progress/max-height-ref.html b/layout/reftests/forms/progress/max-height-ref.html
index 1148e031cf59..872f9cc82610 100644
--- a/layout/reftests/forms/progress/max-height-ref.html
+++ b/layout/reftests/forms/progress/max-height-ref.html
@@ -5,7 +5,6 @@
     padding: 23px;
     border: 1px solid black;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
     overflow: hidden;
   }
 </style>
diff --git a/layout/reftests/forms/progress/max-height.html b/layout/reftests/forms/progress/max-height.html
index 436e795117b0..c9d545330ad0 100644
--- a/layout/reftests/forms/progress/max-height.html
+++ b/layout/reftests/forms/progress/max-height.html
@@ -5,7 +5,6 @@
     padding: 23px;
     border: 1px solid black;
     box-sizing: border-box;
-    -moz-box-sizing: border-box;
     overflow: hidden;
   }
 </style>
diff --git a/layout/reftests/forms/progress/style.css b/layout/reftests/forms/progress/style.css
index df93dd0bcac9..025bde8f8611 100644
--- a/layout/reftests/forms/progress/style.css
+++ b/layout/reftests/forms/progress/style.css
@@ -28,7 +28,7 @@ div.progress-bar {
    * width: 100%;
    */
 
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
 
   /* Default style in case of there is -moz-appearance: none; */
   background-color: #0064b4;
diff --git a/layout/reftests/table-width/cell-pref-width-border-box.html b/layout/reftests/table-width/cell-pref-width-border-box.html
index 0640e9cd5803..801c6e92e2a6 100644
--- a/layout/reftests/table-width/cell-pref-width-border-box.html
+++ b/layout/reftests/table-width/cell-pref-width-border-box.html
@@ -17,7 +17,7 @@ table
 
 td
 {
-    -moz-box-sizing: border-box;
+    box-sizing: border-box;
     border: solid 1px black;
 }
 </style>
diff --git a/layout/reftests/transform-3d/backface-visibility-2-ref.html b/layout/reftests/transform-3d/backface-visibility-2-ref.html
index 1548912ca6d1..bc5146dbef79 100644
--- a/layout/reftests/transform-3d/backface-visibility-2-ref.html
+++ b/layout/reftests/transform-3d/backface-visibility-2-ref.html
@@ -26,7 +26,7 @@
 	.face.back {
 		display: block;
 		-moz-transform: rotateY(180deg);
-		-moz-box-sizing: border-box;
+		box-sizing: border-box;
 		padding: 10px;
 		color: white;
 		text-align: center;
diff --git a/layout/reftests/transform-3d/backface-visibility-2.html b/layout/reftests/transform-3d/backface-visibility-2.html
index 81c66d0c5fb4..d55a8c9b41d4 100644
--- a/layout/reftests/transform-3d/backface-visibility-2.html
+++ b/layout/reftests/transform-3d/backface-visibility-2.html
@@ -26,7 +26,7 @@
 	.face.back {
 		display: block;
 		-moz-transform: rotateY(180deg);
-		-moz-box-sizing: border-box;
+		box-sizing: border-box;
 		padding: 10px;
 		color: white;
 		text-align: center;
diff --git a/layout/style/forms.css b/layout/style/forms.css
index 4bb0fa5c3d15..d7e019aa1be4 100644
--- a/layout/style/forms.css
+++ b/layout/style/forms.css
@@ -196,7 +196,7 @@ select {
   word-wrap: normal !important;
   text-align: start; 
   cursor: default;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   -moz-user-select: none;
   -moz-appearance: menulist;
   border-width: 2px;
@@ -245,7 +245,7 @@ select > button {
 
   /* Make sure to size correctly if the combobox has a non-auto height. */
   height: 100% ! important;
-  -moz-box-sizing: border-box ! important;
+  box-sizing: border-box ! important;
 
   /*
     Make sure to align properly with the display frame.  Note that we
@@ -277,7 +277,7 @@ select:empty {
   -moz-user-select: none;
   /* Make sure to size correctly if the combobox has a non-auto height. */
   height: 100% ! important;
-  -moz-box-sizing: border-box ! important;
+  box-sizing: border-box ! important;
 }
 
 option {
@@ -457,7 +457,7 @@ input[type="color"]:-moz-system-metric(color-picker-available)::-moz-color-swatc
   min-height: 3px;
   margin-left: auto;
   margin-right: auto;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   border: 1px solid grey;
   display: block;
 }
@@ -493,7 +493,7 @@ input[type="checkbox"] {
    (Should we maybe set !important on width and height, then?)  */
 input[type="radio"],
 input[type="checkbox"] {
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   width: 13px;
   height: 13px;
   cursor: default;
@@ -552,7 +552,7 @@ input[type="submit"] {
   border: 2px outset ButtonFace;
   background-color: ButtonFace;
   cursor: default;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   -moz-user-select: none;
   -moz-binding: none;
 }
@@ -741,7 +741,7 @@ progress {
   float: none ! important;
   position: static ! important;
   overflow: visible ! important;
-  -moz-box-sizing: border-box ! important;
+  box-sizing: border-box ! important;
 
   -moz-appearance: progresschunk;
   height: 100%;
diff --git a/layout/style/html.css b/layout/style/html.css
index 6adffa74de6e..f09794488e83 100644
--- a/layout/style/html.css
+++ b/layout/style/html.css
@@ -247,7 +247,7 @@ table {
   margin-top: 0;
   margin-bottom: 0;
   /* XXXldb do we want this if we're border-collapse:collapse ? */
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
   text-indent: 0;
 }
 
@@ -604,7 +604,7 @@ hr {
   margin: 0.5em auto 0.5em auto;
   color: gray;
   -moz-float-edge: margin-box;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
 }
 
 hr[size="1"] {
@@ -730,7 +730,7 @@ video > .caption-box {
   position: relative;
   overflow: hidden;
   padding: 1.5%;
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
 }
 
 /* emulation of non-standard HTML <marquee> tag */
diff --git a/layout/style/quirk.css b/layout/style/quirk.css
index e658bb70acb0..5893278f3f14 100644
--- a/layout/style/quirk.css
+++ b/layout/style/quirk.css
@@ -219,7 +219,7 @@ img[align=right] {
 /* Note that all other <input>s already use border-box
    sizing, so we're ok with this selector */
 input:not([type=image]), textarea {
-  -moz-box-sizing: border-box;
+  box-sizing: border-box;
 }
 
 /* Quirk: give form margin for compat (b=41806) */
diff --git a/layout/style/ua.css b/layout/style/ua.css
index 800101432d16..247de944c7a8 100644
--- a/layout/style/ua.css
+++ b/layout/style/ua.css
@@ -16,12 +16,12 @@
 
 *|*::-moz-table {
   display: table !important;
-  -moz-box-sizing: border-box; /* XXX do we really want this? */
+  box-sizing: border-box; /* XXX do we really want this? */
 }
 
 *|*::-moz-inline-table {
   display: inline-table !important;
-  -moz-box-sizing: border-box; /* XXX do we really want this? */
+  box-sizing: border-box; /* XXX do we really want this? */
 }
 
 *|*::-moz-table-outer {
@@ -248,7 +248,7 @@
   max-width: none !important;
   min-height: 0 !important;
   max-height: none !important;
-  -moz-box-sizing: border-box !important; 
+  box-sizing: border-box !important;
 }
 
 /* If there is a full-screen element that is not the root then
diff --git a/layout/xul/reftest/image-size-ref.xul b/layout/xul/reftest/image-size-ref.xul
index b65797025082..c67364686ba3 100644
--- a/layout/xul/reftest/image-size-ref.xul
+++ b/layout/xul/reftest/image-size-ref.xul
@@ -17,12 +17,12 @@ div div { background: blue; display: inline; float: left; }
       src="image4x3.png" style="width: 20px; height: 15px;"/><html:img
       src="image4x3.png" style="width: 20px; height: 15px;"/><html:img
       src="image4x3.png" style="width: 40px; height: 30px; border: 8px solid green;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 80px; height: 64px; border: 8px solid yellow;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 72px; height: 58px; border: 8px solid green;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 24px; height: 22px; border: 8px solid yellow;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 74px; height: 53px; border: solid yellow; border-top-width: 1px; border-right-width: 2px; border-bottom-width: 4px; border-left-width: 8px;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 18px; height: 11px; border: solid green; border-top-width: 1px; border-right-width: 2px; border-bottom-width: 4px; border-left-width: 8px;"/>
+      src="image4x3.png" style="box-sizing: border-box; width: 80px; height: 64px; border: 8px solid yellow;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 72px; height: 58px; border: 8px solid green;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 24px; height: 22px; border: 8px solid yellow;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 74px; height: 53px; border: solid yellow; border-top-width: 1px; border-right-width: 2px; border-bottom-width: 4px; border-left-width: 8px;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 18px; height: 11px; border: solid green; border-top-width: 1px; border-right-width: 2px; border-bottom-width: 4px; border-left-width: 8px;"/>
 </html:div>
 
 <html:div><html:img
@@ -35,12 +35,12 @@ div div { background: blue; display: inline; float: left; }
       src="image4x3.png" style="width: 20px; height: 15px;"/><html:img
       src="image4x3.png" style="width: 60px; height: 25px;"/><html:img
       src="image4x3.png" style="width: 20px; height: 75px;"/><html:img
-      src="image4x3.png" style="width: 80px; height: 64px; padding: 8px; -moz-box-sizing: border-box;"/><html:img
-      src="image4x3.png" style="width: 72px; height: 58px; padding: 8px; -moz-box-sizing: border-box;"/><html:img
-      src="image4x3.png" style="width: 24px; height: 22px; padding: 8px; -moz-box-sizing: border-box;"/><html:img
-      src="image4x3.png" style="width: 24px; height: 22px; padding: 8px; -moz-box-sizing: border-box;"/><html:img
-      src="image4x3.png" style="width: 67px; height: 60px; padding: 4px 2px 8px 1px; -moz-box-sizing: border-box;"/><html:img
-      src="image4x3.png" style="width: 11px; height: 18px; padding: 4px 2px 8px 1px; -moz-box-sizing: border-box;"/>
+      src="image4x3.png" style="width: 80px; height: 64px; padding: 8px; box-sizing: border-box;"/><html:img
+      src="image4x3.png" style="width: 72px; height: 58px; padding: 8px; box-sizing: border-box;"/><html:img
+      src="image4x3.png" style="width: 24px; height: 22px; padding: 8px; box-sizing: border-box;"/><html:img
+      src="image4x3.png" style="width: 24px; height: 22px; padding: 8px; box-sizing: border-box;"/><html:img
+      src="image4x3.png" style="width: 67px; height: 60px; padding: 4px 2px 8px 1px; box-sizing: border-box;"/><html:img
+      src="image4x3.png" style="width: 11px; height: 18px; padding: 4px 2px 8px 1px; box-sizing: border-box;"/>
 </html:div>
 
 <html:div><html:img
@@ -68,32 +68,32 @@ div div { background: blue; display: inline; float: left; }
 </html:div>
 
 <html:div><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/>
+      src="image4x3.png" style="box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/>
 </html:div>
 
 <html:div><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/>
+      src="image4x3.png" style="box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/>
 </html:div>
 
 <html:div><html:img
       src="image4x3.png" style="width: 40px; height: 30px;"/><html:img
       src="image4x3.png" style="width: 40px; height: 30px;"/><html:img
       src="image4x3.png" style="width: 40px; height: 30px;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 60px; height: 49px; border: 8px solid green;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 112px; height: 88px; border: 8px solid yellow;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 96px; height: 76px; border: 8px solid green;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 112px; height: 88px; border: 8px solid yellow;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 106px; height: 77px; border: solid yellow; border-top-width: 1px; border-right-width: 2px; border-bottom-width: 4px; border-left-width: 8px;"/>
+      src="image4x3.png" style="box-sizing: border-box; width: 60px; height: 49px; border: 8px solid green;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 112px; height: 88px; border: 8px solid yellow;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 96px; height: 76px; border: 8px solid green;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 112px; height: 88px; border: 8px solid yellow;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 106px; height: 77px; border: solid yellow; border-top-width: 1px; border-right-width: 2px; border-bottom-width: 4px; border-left-width: 8px;"/>
 </html:div>
 
 <html:div><html:img
       src="image4x3.png" style="width: 60px; height: 45px;"/><html:img
       src="image4x3.png" style="width: 120px; height: 90px;"/><html:img
       src="image4x3.png" style="width 60px; height: 45px;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 60px; height: 49px; padding: 8px;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 112px; height: 88px; padding: 8px;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 96px; height: 76px; padding: 8px;"/><html:img
-      src="image4x3.png" style="-moz-box-sizing: border-box; width: 112px; height: 88px; padding: 8px;"/>
+      src="image4x3.png" style="box-sizing: border-box; width: 60px; height: 49px; padding: 8px;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 112px; height: 88px; padding: 8px;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 96px; height: 76px; padding: 8px;"/><html:img
+      src="image4x3.png" style="box-sizing: border-box; width: 112px; height: 88px; padding: 8px;"/>
 </html:div>
 
 <html:div><html:div
@@ -108,8 +108,8 @@ div div { background: blue; display: inline; float: left; }
 
 <html:div><html:div style="width: 20px; height: 15px;"/></html:div>
 
-<html:div><html:div style="-moz-box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/></html:div>
+<html:div><html:div style="box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/></html:div>
 
-<html:div><html:div style="-moz-box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/></html:div>
+<html:div><html:div style="box-sizing: border-box; width: 24px; height: 22px; border: 8px solid green;"/></html:div>
 
 </window>
diff --git a/layout/xul/test/test_bug563416.html b/layout/xul/test/test_bug563416.html
index 39f4f6a82590..dd245de0b05d 100644
--- a/layout/xul/test/test_bug563416.html
+++ b/layout/xul/test/test_bug563416.html
@@ -10,7 +10,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=563416
 </head>
 <body>
 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=563416">Mozilla Bug 563416</a>
-<p id="display"><iframe id="test" src='data:text/html,<textarea style="-moz-box-sizing:content-box; -moz-appearance:none; height: 0px; padding: 0px;" cols="20" rows="10">hsldkjvmshlkkajskdlfksdjflskdjflskdjflskdjflskdjfddddddddd</textarea>'></iframe></p>
+<p id="display"><iframe id="test" src='data:text/html,<textarea style="box-sizing:content-box; -moz-appearance:none; height: 0px; padding: 0px;" cols="20" rows="10">hsldkjvmshlkkajskdlfksdjflskdjflskdjflskdjflskdjfddddddddd</textarea>'></iframe></p>
 <div id="content" style="display: none">
   
 </div>
diff --git a/widget/reftests/progressbar-fallback-default-style-ref.html b/widget/reftests/progressbar-fallback-default-style-ref.html
index 8627319ee4ae..5de4274ecb5b 100644
--- a/widget/reftests/progressbar-fallback-default-style-ref.html
+++ b/widget/reftests/progressbar-fallback-default-style-ref.html
@@ -29,7 +29,7 @@
       height: 100%;
       width: 100%;
 
-      -moz-box-sizing: border-box;
+      box-sizing: border-box;
 
       /* Default style in case of there is -moz-appearance: none; */
       background-color: #0064b4;
