.slideInDown {
  -webkit-animation-name: slideInDown;
  animation-name: slideInDown;
}

@include keyframes(slideInDown) {
  0% {
    -webkit-transform: translate3d(0, -100%, 0);
    transform: translate3d(0, -100%, 0);
    visibility: visible;
  }

  100% {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
  }
}