@if $use-bounceInDown == true
  @-webkit-keyframes bounceInDown
    0%
      opacity: 0
      -webkit-transform: translateY(-$base-distance-big * 2)

    60%
      opacity: 1
      -webkit-transform: translateY($base-distance * 3)

    80%
      -webkit-transform: translateY(-$base-distance)

    100%
      -webkit-transform: translateY(0)

  @keyframes bounceInDown
    0%
      opacity: 0
      transform: translateY(-$base-distance-big * 2)

    60%
      opacity: 1
      transform: translateY($base-distance * 3)

    80%
      transform: translateY(-$base-distance)

    100%
      transform: translateY(0)

  .bounceInDown
    +animate-prefixer(animation-name, bounceInDown)