// Transition
@mixin transition($transition...) {
  -webkit-transition: $transition;
  transition: $transition;
}
@mixin transition-property($transition-property...) {
  -webkit-transition-property: $transition-property;
  transition-property: $transition-property;
}
@mixin transition-delay($transition-delay) {
  -webkit-transition-delay: $transition-delay;
  transition-delay: $transition-delay;
}
@mixin transition-duration($transition-duration...) {
  -webkit-transition-duration: $transition-duration;
  transition-duration: $transition-duration;
}
@mixin transition-timing-function($timing-function) {
  -webkit-transition-timing-function: $timing-function;
  transition-timing-function: $timing-function;
}
@mixin transition-transform($transition...) {
  -webkit-transition: -webkit-transform $transition;
  transition: transform $transition;
}