animate.css/source/attention_seekers/wobble.css

/* originally authored by Nick Pettit - https://github.com/nickpettit/glide */

@keyframes wobble {
  0% {
    transform: none;
  }

  15% {
    transform: translate3d(-25%, 0, 0) rotate3d(0, 0, 1, -5deg);
  }

  30% {
    transform: translate3d(20%, 0, 0) rotate3d(0, 0, 1, 3deg);
  }

  45% {
    transform: translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -3deg);
  }

  60% {
    transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 2deg);
  }

  75% {
    transform: translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -1deg);
  }

  100% {
    transform: none;
  }
}

.wobble {
  animation-name: wobble;
}