@-moz-keyframes flipOutY {
  0% {
    transform: perspective(em(400px)) rotateY(0deg);
    opacity: 1;
  }
  100% {
    transform: perspective(em(400px)) rotateY(90deg);
    opacity: 0;
  }
}
@-webkit-keyframes flipOutY {
  0% {
    transform: perspective(em(400px)) rotateY(0deg);
    opacity: 1;
  }
  100% {
    transform: perspective(em(400px)) rotateY(90deg);
    opacity: 0;
  }
}
@-o-keyframes flipOutY {
  0% {
    transform: perspective(em(400px)) rotateY(0deg);
    opacity: 1;
  }
  100% {
    transform: perspective(em(400px)) rotateY(90deg);
    opacity: 0;
  }
}
@keyframes flipOutY {
  0% {
    transform: perspective(em(400px)) rotateY(0deg);
    opacity: 1;
  }
  100% {
    transform: perspective(em(400px)) rotateY(90deg);
    opacity: 0;
  }
}