AI CSS Animations

Letters Rise

Each letter rises and fades in a beat after the previous one. Every span carries its index in a custom property, so the delay is one calc() and adding letters needs no new CSS.

Also known as: staggered letter animation, split text reveal, letter by letter.

Welcome!

HTML

<div class="txt-letters-rise" aria-label="Welcome!"><span style="--i: 0">W</span><span style="--i: 1">e</span><span style="--i: 2">l</span><span style="--i: 3">c</span><span style="--i: 4">o</span><span style="--i: 5">m</span><span style="--i: 6">e</span><span style="--i: 7">!</span></div>

CSS

.txt-letters-rise {
  --c: var(--txt-color, #3b82f6);
  font-size: var(--txt-size, 32px);
  font-family: system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c);}
.txt-letters-rise span {
  display: inline-block;
  opacity: 0;
  animation: txt-letters-rise-up 0.5s ease-out forwards;
  animation-delay: calc(var(--i) * 60ms);
}
@keyframes txt-letters-rise-up {
  from { opacity: 0; transform: translateY(0.6em); }
  to   { opacity: 1; transform: translateY(0); }
}

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

Customizing this snippet

  • Color: set --txt-color on the element or a parent. Currently previewing #3b82f6.
  • Font size: set --txt-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 40px.
  • 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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