// COMPONENT ANIMATIONS
 // --------------------
 
 .fade {
   .opacity(0);
   .transition(opacity .15s linear);
   &.in {
     .opacity(100);
   }
 }
 
 .collapse {
   position: relative;
   height: 0;
   overflow: hidden;
   .transition(height .35s ease);
   &.in {
     height: auto;
   }
 }