animate.css/source/fading_exits/fadeOutLeftBig.css

@keyframes fadeOutLeftBig {
  0% {
    opacity: 1;
    transform: translateX(0);
  }

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

.fadeOutLeftBig {
  animation-name: fadeOutLeftBig;
}