Refactorize even more the LESS file

src/rzslider.less

@@ -57,13 +57,13 @@ rzslider {
       z-index: 1;
       background: @barNormalColor;
       .rounded(@barHeight/2);
-    }
 
-    &.rz-bar.rz-selection {
+      &.rz-selection {
         z-index: 2;
         background: @barFillColor;
         .rounded(@barHeight/2);
       }
+    }
 
     &.rz-pointer {
       cursor: pointer;
@@ -77,9 +77,8 @@ rzslider {
       //  -moz-transition:all linear 0.15s;
       //  -o-transition:all linear 0.15s;
       //  transition:all linear 0.15s;
-    }
 
-    &.rz-pointer:after {
+      &:after {
         content: '';
         width: @handlePointerSize;
         height: @handlePointerSize;
@@ -89,30 +88,27 @@ rzslider {
         .rounded(@handlePointerSize/2);
         background: @handleInnerColor;
       }
-
-    &.rz-pointer:hover:after {
+      &:hover:after {
         background-color: @handleHoverColor;
       }
-
-    &.rz-pointer.rz-active:after {
+      &.rz-active:after {
         background-color: @handleActiveColor;
       }
+    }
 
     &.rz-bubble {
       cursor: default;
       bottom: @handleSize/2;
       padding: @bubblePadding;
       color: @labelTextColor;
-    }
-
-    &.rz-bubble.rz-selection {
+      &.rz-selection {
         top: @handleSize/2;
       }
-
-    &.rz-bubble.rz-limit {
+      &.rz-limit {
         color: @limitLabelTextColor;
       }
     }
+  }
 
   .rz-ticks {
     box-sizing: border-box;