Bug 646253 - The end caps on the About:Home page is incorrect [r=vingtetun]

mobile/themes/core/aboutHome.css

@@ -236,14 +236,25 @@ body[dir="rtl"] {
 }
 
 @media (min-width: 400px) {
-  #feedback {
+  body[dir="ltr"]  #feedback {
     border-radius: 8px 0 0 8px;
   }
 
-  #support {
-    border-left: none;
+  body[dir="rtl"]  #feedback {
     border-radius: 0 8px 8px 0;
   }
+
+  #support {
+    -moz-border-start: none;
+  }
+
+  body[dir="ltr"]  #support {
+    border-radius: 0 8px 8px 0;
+  }
+
+  body[dir="rtl"]  #support {
+    border-radius: 8px 0 0 8px;
+  }
 }
 
 #promo {