Update mixins to remove Opera prefixes on gradients; reorder rules for consistency

less/mixins.less

@@ -248,20 +248,18 @@
 #gradient {
   .horizontal(@startColor: #555, @endColor: #333) {
     background-color: @endColor;
-    background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+
     background-image: -webkit-gradient(linear, 0 0, 100% 0, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
     background-image: -webkit-linear-gradient(left, @startColor, @endColor); // Safari 5.1+, Chrome 10+
-    background-image: -o-linear-gradient(left, @startColor, @endColor); // Opera 11.10
+    background-image: -moz-linear-gradient(left, @startColor, @endColor); // FF 3.6+
     background-image: linear-gradient(to right, @startColor, @endColor); // Standard, IE10
     background-repeat: repeat-x;
     filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@startColor),argb(@endColor))); // IE9 and down
   }
   .vertical(@startColor: #555, @endColor: #333) {
     background-color: @endColor;
-    background-image: -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+
     background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
     background-image: -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+
-    background-image: -o-linear-gradient(top, @startColor, @endColor); // Opera 11.10
+    background-image: -moz-linear-gradient(top, @startColor, @endColor); // FF 3.6+
     background-image: linear-gradient(to bottom, @startColor, @endColor); // Standard, IE10
     background-repeat: repeat-x;
     filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down
@@ -269,9 +267,8 @@
   .directional(@startColor: #555, @endColor: #333, @deg: 45deg) {
     background-color: @endColor;
     background-repeat: repeat-x;
-    background-image: -moz-linear-gradient(@deg, @startColor, @endColor); // FF 3.6+
     background-image: -webkit-linear-gradient(@deg, @startColor, @endColor); // Safari 5.1+, Chrome 10+
-    background-image: -o-linear-gradient(@deg, @startColor, @endColor); // Opera 11.10
+    background-image: -moz-linear-gradient(@deg, @startColor, @endColor); // FF 3.6+
     background-image: linear-gradient(@deg, @startColor, @endColor); // Standard, IE10
   }
   .horizontal-three-colors(@startColor: #00b3ee, @midColor: #7a43b6, @colorStop: 50%, @endColor: #c3325f) {
@@ -279,7 +276,6 @@
     background-image: -webkit-gradient(left, linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor));
     background-image: -webkit-linear-gradient(left, @startColor, @midColor @colorStop, @endColor);
     background-image: -moz-linear-gradient(left, @startColor, @midColor @colorStop, @endColor);
-    background-image: -o-linear-gradient(left, @startColor, @midColor @colorStop, @endColor);
     background-image: linear-gradient(to right, @startColor, @midColor @colorStop, @endColor);
     background-repeat: no-repeat;
     filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@startColor),argb(@endColor))); // IE9 and down, gets no color-stop at all for proper fallback
@@ -290,7 +286,6 @@
     background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), color-stop(@colorStop, @midColor), to(@endColor));
     background-image: -webkit-linear-gradient(@startColor, @midColor @colorStop, @endColor);
     background-image: -moz-linear-gradient(top, @startColor, @midColor @colorStop, @endColor);
-    background-image: -o-linear-gradient(@startColor, @midColor @colorStop, @endColor);
     background-image: linear-gradient(@startColor, @midColor @colorStop, @endColor);
     background-repeat: no-repeat;
     filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down, gets no color-stop at all for proper fallback
@@ -300,7 +295,6 @@
     background-image: -webkit-gradient(radial, center center, 0, center center, 460, from(@innerColor), to(@outerColor));
     background-image: -webkit-radial-gradient(circle, @innerColor, @outerColor);
     background-image: -moz-radial-gradient(circle, @innerColor, @outerColor);
-    background-image: -o-radial-gradient(circle, @innerColor, @outerColor);
     background-image: radial-gradient(circle, @innerColor, @outerColor);
     background-repeat: no-repeat;
   }
@@ -309,7 +303,6 @@
     background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, rgba(255,255,255,.15)), color-stop(.25, transparent), color-stop(.5, transparent), color-stop(.5, rgba(255,255,255,.15)), color-stop(.75, rgba(255,255,255,.15)), color-stop(.75, transparent), to(transparent));
     background-image: -webkit-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
     background-image: -moz-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
-    background-image: -o-linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
     background-image: linear-gradient(@angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
   }
 }