Sass Transition Mixin

mixin-transition

@mixin transition($args...) {
  -webkit-transition: $args;
     -moz-transition: $args;
      -ms-transition: $args;
          transition: $args;
}

a {
  color:$color;
  @include transition(color .3s ease);
  &:hover {
    color:$color;
  }
}