remove some old -moz- prefixes from mixins while we're at it, dropping FF3.6 support

bootstrap-responsive.css

@@ -13,7 +13,6 @@
   }
   .navbar .nav, .navbar .nav > li:last-child a {
     -webkit-border-radius: 0 0 4px 0;
-    -moz-border-radius: 0 0 4px 0;
     border-radius: 0 0 4px 0;
   }
   .navbar .nav > li {
@@ -47,9 +46,8 @@
     border-left: 4px solid transparent;
     border-right: 4px solid transparent;
     border-top: 4px solid #ffffff;
-    filter: alpha(opacity=100);
-    -moz-opacity: 1;
     opacity: 1;
+    filter: alpha(opacity=100);
     content: "↓";
   }
   .navbar .nav:hover > li {

bootstrap-responsive.min.css

 
 .hidden{display:none;visibility:hidden;}
-@media (max-width: 480px){.navbar .nav{position:absolute;top:0;left:0;width:180px;padding-top:40px;list-style:none;} .navbar .nav,.navbar .nav>li:last-child a{-webkit-border-radius:0 0 4px 0;-moz-border-radius:0 0 4px 0;border-radius:0 0 4px 0;} .navbar .nav>li{float:none;display:none;} .navbar .nav>li>a{float:none;background-color:#222;} .navbar .nav>.active{display:block;position:absolute;top:0;left:0;} .navbar .nav>.active>a{background-color:transparent;} .navbar .nav>.active>a:hover{background-color:#333;} .navbar .nav>.active>a:after{display:inline-block;width:0;height:0;margin-top:8px;margin-left:6px;text-indent:-99999px;vertical-align:top;border-left:4px solid transparent;border-right:4px solid transparent;border-top:4px solid #ffffff;filter:alpha(opacity=100);-moz-opacity:1;opacity:1;content:"↓";} .navbar .nav:hover>li{display:block;} .navbar .nav:hover>li>a:hover{background-color:#333;} .form-horizontal .control-group>label{float:none;width:auto;padding-top:0;text-align:left;} .form-horizontal .controls{margin-left:0;} .form-horizontal .control-list{padding-top:0;} .form-horizontal .form-actions{padding-left:0;} .modal{position:absolute;top:20px;left:20px;right:20px;width:auto;margin:0;}.modal.fade.in{top:auto;} .modal-header .close{padding:10px;}}@media (max-width: 768px){.navbar-fixed{position:absolute;} .navbar-fixed .nav{float:none;} .container{width:auto;padding:0 20px;} .row{margin-left:0;} .row>[class*="span"]{float:none;display:block;width:auto;margin:0;}}@media (min-width: 768px) and (max-width: 940px){.container{width:748px;} .span1{width:44px;} .span2{width:108px;} .span3{width:172px;} .span4{width:236px;} .span5{width:300px;} .span6{width:364px;} .span7{width:428px;} .span8{width:492px;} .span9{width:556px;} .span10{width:620px;} .span11{width:684px;} .span12{width:748px;} .offset1{margin-left:84px;} .offset2{margin-left:148px;} .offset3{margin-left:212px;} .offset4{margin-left:276px;} .offset5{margin-left:340px;} .offset6{margin-left:404px;} .offset7{margin-left:468px;} .offset8{margin-left:532px;} .offset9{margin-left:596px;} .offset10{margin-left:660px;} .offset11{margin-left:724px;} .offset12{margin-left:788px;}}
+@media (max-width: 480px){.navbar .nav{position:absolute;top:0;left:0;width:180px;padding-top:40px;list-style:none;} .navbar .nav,.navbar .nav>li:last-child a{-webkit-border-radius:0 0 4px 0;border-radius:0 0 4px 0;} .navbar .nav>li{float:none;display:none;} .navbar .nav>li>a{float:none;background-color:#222;} .navbar .nav>.active{display:block;position:absolute;top:0;left:0;} .navbar .nav>.active>a{background-color:transparent;} .navbar .nav>.active>a:hover{background-color:#333;} .navbar .nav>.active>a:after{display:inline-block;width:0;height:0;margin-top:8px;margin-left:6px;text-indent:-99999px;vertical-align:top;border-left:4px solid transparent;border-right:4px solid transparent;border-top:4px solid #ffffff;opacity:1;filter:alpha(opacity=100);content:"↓";} .navbar .nav:hover>li{display:block;} .navbar .nav:hover>li>a:hover{background-color:#333;} .form-horizontal .control-group>label{float:none;width:auto;padding-top:0;text-align:left;} .form-horizontal .controls{margin-left:0;} .form-horizontal .control-list{padding-top:0;} .form-horizontal .form-actions{padding-left:0;} .modal{position:absolute;top:20px;left:20px;right:20px;width:auto;margin:0;}.modal.fade.in{top:auto;} .modal-header .close{padding:10px;}}@media (max-width: 768px){.navbar-fixed{position:absolute;} .navbar-fixed .nav{float:none;} .container{width:auto;padding:0 20px;} .row{margin-left:0;} .row>[class*="span"]{float:none;display:block;width:auto;margin:0;}}@media (min-width: 768px) and (max-width: 940px){.container{width:748px;} .span1{width:44px;} .span2{width:108px;} .span3{width:172px;} .span4{width:236px;} .span5{width:300px;} .span6{width:364px;} .span7{width:428px;} .span8{width:492px;} .span9{width:556px;} .span10{width:620px;} .span11{width:684px;} .span12{width:748px;} .offset1{margin-left:84px;} .offset2{margin-left:148px;} .offset3{margin-left:212px;} .offset4{margin-left:276px;} .offset5{margin-left:340px;} .offset6{margin-left:404px;} .offset7{margin-left:468px;} .offset8{margin-left:532px;} .offset9{margin-left:596px;} .offset10{margin-left:660px;} .offset11{margin-left:724px;} .offset12{margin-left:788px;}}

lib/mixins.less

@@ -134,14 +134,12 @@
 // Border Radius
 .border-radius(@radius: 5px) {
   -webkit-border-radius: @radius;
-     -moz-border-radius: @radius;
           border-radius: @radius;
 }
 
 // Drop shadows
 .box-shadow(@shadow: 0 1px 3px rgba(0,0,0,.25)) {
   -webkit-box-shadow: @shadow;
-     -moz-box-shadow: @shadow;
           box-shadow: @shadow;
 }
 
@@ -178,10 +176,9 @@
 }
 
 // Background clipping
-// Heads up: FF 3.6 and under need padding instead of padding-box
+// Heads up: FF 3.6 and under need "padding" instead of "padding-box"
 .background-clip(@clip) {
   -webkit-background-clip: @clip;
-     -moz-background-clip: @clip;
           background-clip: @clip;
 }
 
@@ -228,9 +225,8 @@
 
 // Opacity
 .opacity(@opacity: 100) {
-  filter: e(%("alpha(opacity=%d)", @opacity));
-    -moz-opacity: @opacity / 100;
-         opacity: @opacity / 100;
+  opacity: @opacity / 100;
+   filter: e(%("alpha(opacity=%d)", @opacity));
 }
 
 
@@ -245,9 +241,7 @@
   }
   .border(@color: @white, @alpha: 1) {
     border-color: hsla(hue(@color), saturation(@color), lightness(@color), @alpha);
-    -webkit-background-clip: padding-box;
-       -moz-background-clip: padding;
-            background-clip: padding-box;
+    .background-clip(padding-box);
   }
 }