Template:HorizShaketext/Styles.css

.horiz-shaketext span {
  display: inline-block;
  animation: horiz-shake 0.2s infinite;
}
@keyframes horiz-shake {
  0% {
    transform: translate(1px, 1px);
  }
  25% {
    transform: translate(2px, 1px);
  }
  50% {
    transform: translate(-2px, 1px);
  }
  75% {
    transform: translate(2px, 1px);
  }
  100% {
    transform: translate(1px, 1px);
  }
}