animate.css/source/attention_seekers/shakeY.css

@keyframes shakeY {
  from,
  to {
    transform: translate3d(0, 0, 0);
  }

  10%,
  30%,
  50%,
  70%,
  90% {
    transform: translate3d(0, -10px, 0);
  }

  20%,
  40%,
  60%,
  80% {
    transform: translate3d(0, 10px, 0);
  }
}

.shakeY {
  animation-name: shakeY;
}