animate.css/source/bouncing_exits/bounceOutLeft.css

@keyframes bounceOutLeft {
  0% {
    transform: translateX(0);
  }

  20% {
    opacity: 1;
    transform: translateX(20px);
  }

  100% {
    opacity: 0;
    transform: translateX(-2000px);
  }
}

.bounceOutLeft {
  animation-name: bounceOutLeft;
}