Wiggle: CSS Keyframe Animation

Wiggle

A quick side to side rotation that dies out, then a long pause before the next one. The polite way to nudge someone toward a button without looping nonstop. Rotates around the center.

Also known as: wiggle animation css, jiggle animation, wiggle every few seconds.

Wiggle

Color Base size 16px Dark background

HTML

<div class="kfa-wiggle">Wiggle</div>

CSS

.kfa-wiggle {
  --c: var(--kfa-color, #3b82f6);
  font-size: var(--kfa-size, 16px);
  display: grid;
  place-items: center;
  width: 5.5em;
  height: 5.5em;
  border-radius: 1em;
  background: var(--c);
  color: #fff;
  font-family: system-ui, sans-serif;
  font-weight: 700;
  box-shadow: 0 0.6em 1.4em -0.6em color-mix(in srgb, var(--c) 70%, transparent);
  animation: kfa-wiggle-shimmy 2.4s ease-in-out infinite;
}
@keyframes kfa-wiggle-shimmy {
  0%, 30%, 100% { transform: rotate(0); }
  4% { transform: rotate(-10deg); }
  8% { transform: rotate(9deg); }
  12% { transform: rotate(-7deg); }
  16% { transform: rotate(5deg); }
  20% { transform: rotate(-3deg); }
  25% { transform: rotate(1.5deg); }
}

@media (prefers-reduced-motion: reduce) {
  .kfa-wiggle, .kfa-wiggle *, .kfa-wiggle::before, .kfa-wiggle::after, .kfa-wiggle *::before, .kfa-wiggle *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

Color: set --kfa-color on the element or a parent. Currently previewing #3b82f6.
Base size: set --kfa-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
Speed: change the duration on the transition or animation shorthand. Staggered delays are relative, so they keep their rhythm.
Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.

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