diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/shapes1/reftest.list b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/shapes1/reftest.list
index 11b6a5a7d7e9..7d4e54040bb2 100644
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/shapes1/reftest.list
+++ b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/shapes1/reftest.list
@@ -1,4 +1,3 @@
-
 # <shape-box> only
 == shape-outside-margin-box-001.html shape-outside-margin-box-001-ref.html
 == shape-outside-margin-box-002.html shape-outside-margin-box-002-ref.html
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-1-ref.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-1-ref.html
deleted file mode 100644
index 8a568d25d927..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-1-ref.html
+++ /dev/null
@@ -1,90 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: compare individual transform with transform functions</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <meta name="assert" content="Tests whether individaul transform works correctlyi by compare the rendering result with transfrom functions of the 'transform' property."/>
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-      }
-      .row_1 {
-        top: 100px;
-      }
-      .scale_1{
-        left: 100px;
-        width: 50px;
-        height: 100px;
-        transform: scaleX(2);
-      }
-      .translate_1 {
-        left: 150px;
-        transform: translateX(150px);
-      }
-      .rotate_1 {
-        left: 450px;
-        transform-origin: 50% 50%;
-        transform: rotate(90deg);
-      }
-
-      .row_2 {
-        top: 250px;
-      }
-      .scale_2{
-        left: 100px;
-        width: 50px;
-        height: 50px;
-        transform: scale(2, 2);
-      }
-      .translate_2 {
-        left: 150px;
-        top: 200px;
-        transform: translate(150px, 50px);
-      }
-      .rotate_2 {
-        left: 450px;
-        transform-origin: 50% 50%;
-        transform: rotate3d(0, 0, 1, 90deg);
-      }
-      .row_3 {
-        transform: perspective(500px);
-        top: 400px;
-      }
-      .scale_3{
-        left: 100px;
-        width: 50px;
-        height: 50px;
-        transform: scale3d(2, 2, 2);
-      }
-      .translate_3 {
-        left: 150px;
-        transform: translate3d(150px, 10px, 10px);
-      }
-      .rotate_3 {
-        left: 450px;
-        transform-origin: 50% 50%;
-        transform: rotate3d(0, 1, 0, 45deg);
-      }
-    </style>
-  </head>
-  <body>
-    <div class="scale_1 row_1"></div>
-    <div class="translate_1 row_1"></div>
-    <div class="rotate_1 row_1"></div>
-    <div class="scale_2 row_2"></div>
-    <div class="translate_2 row_2"></div>
-    <div class="rotate_2 row_2"></div>
-    <div class="scale_3 row_3"></div>
-    <div class="translate_3 row_3"></div>
-    <div class="rotate_3 row_3"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-1.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-1.html
deleted file mode 100644
index 4f83e2eac47f..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-1.html
+++ /dev/null
@@ -1,100 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: compare individual transform with transform functions</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <meta name="assert" content="Tests whether individaul transform works correctlyi by compare the rendering result with transfrom functions of the 'transform' property."/>
-    <link rel="match" href="individual-transform-1-ref.html">
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-      }
-      .row_1 {
-        top: 100px;
-      }
-      .scale_1{
-        left: 100px;
-        width: 50px;
-        height: 100px;
-        /* test 'scale: <number>' */
-        scale: 2;
-      }
-      .translate_1 {
-        left: 150px;
-        /* test 'translate: <length-percentage>' */
-        translate: 150px;
-      }
-      .rotate_1 {
-        left: 450px;
-        transform-origin: 50% 50%;
-        /* test 'rota: te<angle>' */
-        rotate: 90deg;
-      }
-
-      .row_2 {
-        top: 250px;
-      }
-      .scale_2{
-        left: 100px;
-        width: 50px;
-        height: 50px;
-        /* test 'scale: <number>{2}'' */
-        scale: 2 2;
-      }
-      .translate_2 {
-        left: 150px;
-        top: 200px;
-        /* test 'translate: <length-percentage><length-percentage>' */
-        translate: 150px 50px;
-      }
-      .rotate_2 {
-        left: 450px;
-        transform-origin: 50% 50%;
-        /* test 'rotate: <number>{3}<angle>'*/
-        rotate: 0 0 1 90deg;
-      }
-      .row_3 {
-        transform: perspective(500px);
-        top: 400px;
-      }
-      .scale_3{
-        left: 100px;
-        width: 50px;
-        height: 50px;
-        /* test 'scale: <number>{3}'' */
-        scale: 2 2 2;
-      }
-      .translate_3 {
-        left: 150px;
-        /* test 'translate: <length-percentage><length>' */
-        translate: 150px 10px 10px;
-      }
-      .rotate_3 {
-        left: 450px;
-        transform-origin: 50% 50%;
-        /* test 'rotate: <number>{3}<angle>'*/
-        rotate: 0 1 0 45deg;
-      }
-    </style>
-  </head>
-  <body>
-    <div class="scale_1 row_1"></div>
-    <div class="translate_1 row_1"></div>
-    <div class="rotate_1 row_1"></div>
-    <div class="scale_2 row_2"></div>
-    <div class="translate_2 row_2"></div>
-    <div class="rotate_2 row_2"></div>
-    <div class="scale_3 row_3"></div>
-    <div class="translate_3 row_3"></div>
-    <div class="rotate_3 row_3"></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2-ref.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2-ref.html
deleted file mode 100644
index ee956aa301f7..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2-ref.html
+++ /dev/null
@@ -1,30 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: combine individual transform properties</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
-    <meta name="assert" content="Tests that we combine transforms in the correct order."/>
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        top: 200px;
-        left: 200px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-        transform: translate(50px, 50px) rotate(45deg) scale(2, 2);
-      }
-
-    </style>
-  </head>
-  <body>
-    <div></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2a.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2a.html
deleted file mode 100644
index 3f6c97386bae..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2a.html
+++ /dev/null
@@ -1,32 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: combine individual transform properties</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
-    <meta name="assert" content="Tests that we combine transforms in the correct order."/>
-    <link rel="match" href="individual-transform-2-ref.html">
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        top: 200px;
-        left: 200px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-        translate: 50px 50px;
-        rotate: 45deg;
-        scale: 2 2;
-      }
-    </style>
-  </head>
-  <body>
-    <div></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2b.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2b.html
deleted file mode 100644
index 94dac2f10ffc..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2b.html
+++ /dev/null
@@ -1,32 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: combine individual transform properties</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
-    <meta name="assert" content="Tests that we combine transforms in the correct order."/>
-    <link rel="match" href="individual-transform-2-ref.html">
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        top: 200px;
-        left: 200px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-        rotate: 45deg;
-        scale: 2 2;
-        translate: 50px 50px;
-      }
-    </style>
-  </head>
-  <body>
-    <div></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2c.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2c.html
deleted file mode 100644
index f84ae2280650..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2c.html
+++ /dev/null
@@ -1,32 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: combine individual transform properties</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
-    <meta name="assert" content="Tests that we combine transforms in the correct order."/>
-    <link rel="match" href="individual-transform-2-ref.html">
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        top: 200px;
-        left: 200px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-        translate: 50px 50px;
-        rotate: 45deg;
-        transform: scale(2, 2);
-      }
-    </style>
-  </head>
-  <body>
-    <div></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2d.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2d.html
deleted file mode 100644
index 5b5694f544e2..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2d.html
+++ /dev/null
@@ -1,31 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: combine individual transform properties</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
-    <meta name="assert" content="Tests that we combine transforms in the correct order."/>
-    <link rel="match" href="individual-transform-2-ref.html">
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        top: 200px;
-        left: 200px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-        translate: 50px 50px;
-        transform: rotate(45deg) scale(2, 2);
-      }
-    </style>
-  </head>
-  <body>
-    <div></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2e.html b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2e.html
deleted file mode 100644
index 0350137bedef..000000000000
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/individual-transform-2e.html
+++ /dev/null
@@ -1,31 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>Individual transform: combine individual transform properties</title>
-    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
-    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#individual-transforms">
-    <link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
-    <meta name="assert" content="Tests that we combine transforms in the correct order."/>
-    <link rel="match" href="individual-transform-2-ref.html">
-    <style>
-      div {
-        position: fixed;
-        width: 100px;
-        height: 100px;
-        top: 200px;
-        left: 200px;
-        transform-origin: 0 0;
-        border-style: solid;
-        border-width: 10px 0px 10px 0px;
-        border-color: lime;
-        translate: 0px 50px;
-        transform: translateX(50px) rotate(45deg) scale(2, 2);
-      }
-    </style>
-  </head>
-  <body>
-    <div></div>
-  </body>
-</html>
diff --git a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/reftest.list b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/reftest.list
index 33773a4c09f2..e4777148d4ba 100644
--- a/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/reftest.list
+++ b/testing/web-platform/tests/css/vendor-imports/mozilla/mozilla-central-reftests/transforms/reftest.list
@@ -5,10 +5,3 @@
 == perspective-zero.html reference/green.html
 == perspective-zero-2.html perspective-zero-2-ref.html
 == perspective-untransformable-no-stacking-context.html perspective-untransformable-no-stacking-context-ref.html
-
-== individual-transform-1.html individual-transform-1-ref.html
-== individual-transform-2a.html individual-transform-2-ref.html
-== individual-transform-2b.html individual-transform-2-ref.html
-== individual-transform-2c.html individual-transform-2-ref.html
-== individual-transform-2d.html individual-transform-2-ref.html
-== individual-transform-2e.html individual-transform-2-ref.html
