Back Out Down: CSS Keyframe Animation

Back Out Down

Steps back first, shrinking to 75 percent and dimming, then drops away and fades. The drop uses an ease-in back curve, so it lifts a hair before it falls, like something let go.

Also known as: backOutDown, back out down css, shrink then drop exit.

Back

Color Base size 16px Dark background

HTML

<div class="kfa-back-out-down">Back</div>

CSS

.kfa-back-out-down {
  --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-back-out-down-kf 0.95s both;
}
@keyframes kfa-back-out-down-kf {
  0% { transform: none; animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1); }
  25% { opacity: 0.8; transform: scale(0.75); animation-timing-function: cubic-bezier(0.6, -0.28, 0.74, 0.05); }
  100% { opacity: 0; transform: translateY(2.4em) scale(0.75); }
}

@media (prefers-reduced-motion: reduce) {
  .kfa-back-out-down, .kfa-back-out-down *, .kfa-back-out-down::before, .kfa-back-out-down::after, .kfa-back-out-down *::before, .kfa-back-out-down *::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.

Back Out Down

HTML

CSS

Customizing this snippet

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