.a-flip-left-bounce {
  @include keyframes(flipLeftBounce) {
    0% {
      opacity: 0;
      transform: rotateY(70deg);
    }

    50% {
      opacity: 1;
      transform: rotateY(-5deg);
    }

    80% {
      transform: rotateY(20deg);
    }

    100% {
      transform: rotateY(0deg);
    }
  }

  @include animate(flipLeftBounce $perspective-bounce-timing ease-in-out 1);
}