Replaced hardcoded CSS rules with mixins

less/button-groups.less

@@ -58,41 +58,25 @@
 // Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
 .btn-group > .btn:first-child {
   margin-left: 0;
-     -webkit-border-top-left-radius: 4px;
-         -moz-border-radius-topleft: 4px;
-             border-top-left-radius: 4px;
-  -webkit-border-bottom-left-radius: 4px;
-      -moz-border-radius-bottomleft: 4px;
-          border-bottom-left-radius: 4px;
+  .border-top-left-radius(4px);
+  .border-bottom-left-radius(4px);
 }
 // Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
 .btn-group > .btn:last-child,
 .btn-group > .dropdown-toggle {
-     -webkit-border-top-right-radius: 4px;
-         -moz-border-radius-topright: 4px;
-             border-top-right-radius: 4px;
-  -webkit-border-bottom-right-radius: 4px;
-      -moz-border-radius-bottomright: 4px;
-          border-bottom-right-radius: 4px;
+  .border-top-right-radius(4px);
+  .border-bottom-right-radius(4px);
 }
 // Reset corners for large buttons
 .btn-group > .btn.large:first-child {
   margin-left: 0;
-     -webkit-border-top-left-radius: 6px;
-         -moz-border-radius-topleft: 6px;
-             border-top-left-radius: 6px;
-  -webkit-border-bottom-left-radius: 6px;
-      -moz-border-radius-bottomleft: 6px;
-          border-bottom-left-radius: 6px;
+  .border-top-left-radius(6px);
+  .border-bottom-left-radius(6px);
 }
 .btn-group > .btn.large:last-child,
 .btn-group > .large.dropdown-toggle {
-     -webkit-border-top-right-radius: 6px;
-         -moz-border-radius-topright: 6px;
-             border-top-right-radius: 6px;
-  -webkit-border-bottom-right-radius: 6px;
-      -moz-border-radius-bottomright: 6px;
-          border-bottom-right-radius: 6px;
+  .border-top-right-radius(6px);
+  .border-bottom-right-radius(6px);
 }
 
 // On hover/focus/active, bring the proper btn to front

less/dropdowns.less

@@ -168,9 +168,7 @@
   left: 100%;
   margin-top: -6px;
   margin-left: -1px;
-  -webkit-border-radius: 0 6px 6px 6px;
-     -moz-border-radius: 0 6px 6px 6px;
-          border-radius: 0 6px 6px 6px;
+  .border-radius(0 6px 6px 6px);
 }
 .dropdown-submenu:hover > .dropdown-menu {
   display: block;
@@ -182,9 +180,7 @@
   bottom: 0;
   margin-top: 0;
   margin-bottom: -2px;
-  -webkit-border-radius: 5px 5px 5px 0;
-     -moz-border-radius: 5px 5px 5px 0;
-          border-radius: 5px 5px 5px 0;
+  .border-radius(5px 5px 5px 0);
 }
 
 // Caret to indicate there is a submenu
@@ -215,9 +211,7 @@
   > .dropdown-menu {
     left: -100%;
     margin-left: 10px;
-    -webkit-border-radius: 6px 0 6px 6px;
-       -moz-border-radius: 6px 0 6px 6px;
-            border-radius: 6px 0 6px 6px;
+    .border-radius(6px 0 6px 6px);
   }
 }
 

less/reset.less

@@ -123,9 +123,7 @@ input[type="submit"] {
     cursor: pointer; // Improves usability and consistency of cursor style between image-type `input` and others.
 }
 input[type="search"] { // Appearance in Safari/Chrome
-  -webkit-box-sizing: content-box;
-     -moz-box-sizing: content-box;
-          box-sizing: content-box;
+  .box-sizing(content-box);
   -webkit-appearance: textfield;
 }
 input[type="search"]::-webkit-search-decoration,

less/tables.less

@@ -91,31 +91,22 @@ table {
   // For first th or td in the first row in the first thead or tbody
   thead:first-child tr:first-child th:first-child,
   tbody:first-child tr:first-child td:first-child {
-    -webkit-border-top-left-radius: 4px;
-            border-top-left-radius: 4px;
-        -moz-border-radius-topleft: 4px;
+    .border-top-left-radius(4px);
   }
   thead:first-child tr:first-child th:last-child,
   tbody:first-child tr:first-child td:last-child {
-    -webkit-border-top-right-radius: 4px;
-            border-top-right-radius: 4px;
-        -moz-border-radius-topright: 4px;
+    .border-top-right-radius(4px);
   }
   // For first th or td in the first row in the first thead or tbody
   thead:last-child tr:last-child th:first-child,
   tbody:last-child tr:last-child td:first-child,
   tfoot:last-child tr:last-child td:first-child {
-    .border-radius(0 0 0 4px);
-    -webkit-border-bottom-left-radius: 4px;
-            border-bottom-left-radius: 4px;
-        -moz-border-radius-bottomleft: 4px;
+    .border-bottom-left-radius(4px);
   }
   thead:last-child tr:last-child th:last-child,
   tbody:last-child tr:last-child td:last-child,
   tfoot:last-child tr:last-child td:last-child {
-    -webkit-border-bottom-right-radius: 4px;
-            border-bottom-right-radius: 4px;
-        -moz-border-radius-bottomright: 4px;
+    .border-bottom-right-radius(4px);
   }
 
   // Special fixes to round the left border on the first td/th
@@ -123,17 +114,13 @@ table {
   caption + tbody tr:first-child td:first-child,
   colgroup + thead tr:first-child th:first-child,
   colgroup + tbody tr:first-child td:first-child {
-    -webkit-border-top-left-radius: 4px;
-            border-top-left-radius: 4px;
-        -moz-border-radius-topleft: 4px;
+    .border-top-left-radius(4px);
   }
   caption + thead tr:first-child th:last-child,
   caption + tbody tr:first-child td:last-child,
   colgroup + thead tr:first-child th:last-child,
   colgroup + tbody tr:first-child td:last-child {
-    -webkit-border-top-right-radius: 4px;
-            border-top-right-radius: 4px;
-        -moz-border-radius-topright: 4px;
+    .border-top-right-radius(4px);
   }
 
 }