plus star spread arrow style

@@ -152,19 +152,15 @@
         float: right;
 
         .icon {
-            -webkit-transition: -webkit-transform .1s ease-in;
-            -moz-transition: -moz-transform .1s ease-in;
-            -ms-transition: -ms-transform .1s ease-in;
-            -o-transition: -o-transform .1s ease-in;
-            transition: transform .1s ease-in;
+            display: inline-block;
+            height: 100%;
+            width: 40rem / $pxConvertRem;
+            @include transition(transform .1s ease-in)
         }
 
         &.spread .icon {
-            -webkit-transform: scale(0.83) rotate(-180deg);
-            -moz-transform: scale(0.83) rotate(-180deg);
-            -ms-transform: scale(0.83) rotate(-180deg);
-            -o-transform: scale(0.83) rotate(-180deg);
-            transform: scale(0.83) rotate(-180deg);
+            @include rotate(-180deg);
+            @include scale(0.83);
         }
     }