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Pure CSSMIT licensed

Kinetic Type Hero

Rave-poster kinetic typography — letters rotate, scale, and float individually using per-letter delay. Acid green and magenta on pure black with strobe-like accents.

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The code

<section class="hs-18" aria-label="Hero">
  <div class="hs-18-pulse" aria-hidden="true"></div>
  <h2 class="hs-18__h">
    <span style="--i: 0">F</span><span style="--i: 1">U</span><span style="--i: 2">L</span
    ><span style="--i: 3">L</span>
    <span class="hs-18__gap"></span>
    <span style="--i: 4">B</span><span style="--i: 5">A</span><span style="--i: 6">S</span
    ><span style="--i: 7">S</span>
    <span class="hs-18__gap"></span>
    <em
      ><span style="--i: 8">M</span><span style="--i: 9">O</span><span style="--i: 10">D</span
      ><span style="--i: 11">E</span></em
    >
  </h2>
  <p class="hs-18__p">
    A booking app for warehouse parties. The line is the door, not the website.
  </p>
  <a class="hs-18__cta" href="#tickets">Get tickets ⚡</a>
</section>
.hs-18 {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 100vh;
  padding: clamp(28px, 5vw, 64px) clamp(20px, 5vw, 56px);
  background: #0a0a0a;
  font-family: 'Inter', system-ui, sans-serif;
  color: #fff;
  box-sizing: border-box;
  overflow: hidden;
  text-align: center;
}

.hs-18-pulse {
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 50% at 30% 30%, rgba(196,255,82,0.18), transparent 60%), radial-gradient(50% 50% at 80% 70%, rgba(238,82,206,0.20), transparent 60%);
  animation: hs-18-pulse 2.4s ease-in-out infinite alternate;
}

@keyframes hs-18-pulse {
  from {
    opacity: 0.6;
  }

  to {
    opacity: 1;
  }
}

.hs-18__h {
  position: relative;
  z-index: 1;
  margin: 0 0 22px;
  font-family: 'Inter', sans-serif;
  font-size: clamp(48px, 9vw, 110px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-transform: uppercase;
}

.hs-18__h span {
  display: inline-block;
  animation: hs-18-jitter 2s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 0.06s);
}

.hs-18__h em {
  color: #ee52ce;
  font-style: italic;
}

.hs-18__h em span {
  color: #ee52ce;
}

.hs-18__h > span:nth-child(-n+4) {
  color: #c4ff52;
}

.hs-18__gap {
  display: inline-block;
  width: 0.4em;
}

@keyframes hs-18-jitter {
  0%,
    100% {
    transform: translateY(0) rotate(0deg) scale(1);
  }

  25% {
    transform: translateY(-8px) rotate(-2deg) scale(1.04);
  }

  50% {
    transform: translateY(0) rotate(2deg) scale(0.98);
  }

  75% {
    transform: translateY(6px) rotate(-1deg) scale(1.02);
  }
}

.hs-18__p {
  position: relative;
  z-index: 1;
  margin: 0 auto 26px;
  font-size: 16px;
  color: #888;
  max-width: 440px;
}

.hs-18__cta {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 14px 28px;
  background: #c4ff52;
  color: #0a0a0a;
  border-radius: 0;
  text-decoration: none;
  font-weight: 800;
  font-size: 14.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 0 28px rgba(196,255,82,0.45);
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.hs-18__cta:hover {
  background: #ee52ce;
  color: #fff;
  box-shadow: 0 0 28px rgba(238,82,206,0.55);
}

@media (prefers-reduced-motion: reduce) {
  .hs-18__h span,
    .hs-18-pulse {
    animation: none;
  }

  .hs-18__cta {
    transition: none;
  }
}
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Here's a working CSS Hero Section from CodeFronts. Use it as-is or adapt to your framework. All classes are scoped under a unique prefix so the code won't collide with your existing styles. MIT licensed.
Demo: Kinetic Type Hero
Source: https://codefronts.com/layouts/css-hero-sections/kinetic-type-hero/

Rave-poster kinetic typography — letters rotate, scale, and float individually using per-letter delay. Acid green and magenta on pure black with strobe-like accents.
## HTML
```html
<section class="hs-18" aria-label="Hero">
  <div class="hs-18-pulse" aria-hidden="true"></div>
  <h2 class="hs-18__h">
    <span style="--i: 0">F</span><span style="--i: 1">U</span><span style="--i: 2">L</span
    ><span style="--i: 3">L</span>
    <span class="hs-18__gap"></span>
    <span style="--i: 4">B</span><span style="--i: 5">A</span><span style="--i: 6">S</span
    ><span style="--i: 7">S</span>
    <span class="hs-18__gap"></span>
    <em
      ><span style="--i: 8">M</span><span style="--i: 9">O</span><span style="--i: 10">D</span
      ><span style="--i: 11">E</span></em
    >
  </h2>
  <p class="hs-18__p">
    A booking app for warehouse parties. The line is the door, not the website.
  </p>
  <a class="hs-18__cta" href="#tickets">Get tickets ⚡</a>
</section>
```
## CSS
```css
.hs-18 {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 100vh;
  padding: clamp(28px, 5vw, 64px) clamp(20px, 5vw, 56px);
  background: #0a0a0a;
  font-family: 'Inter', system-ui, sans-serif;
  color: #fff;
  box-sizing: border-box;
  overflow: hidden;
  text-align: center;
}

.hs-18-pulse {
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 50% at 30% 30%, rgba(196,255,82,0.18), transparent 60%), radial-gradient(50% 50% at 80% 70%, rgba(238,82,206,0.20), transparent 60%);
  animation: hs-18-pulse 2.4s ease-in-out infinite alternate;
}

@keyframes hs-18-pulse {
  from {
    opacity: 0.6;
  }

  to {
    opacity: 1;
  }
}

.hs-18__h {
  position: relative;
  z-index: 1;
  margin: 0 0 22px;
  font-family: 'Inter', sans-serif;
  font-size: clamp(48px, 9vw, 110px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-transform: uppercase;
}

.hs-18__h span {
  display: inline-block;
  animation: hs-18-jitter 2s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 0.06s);
}

.hs-18__h em {
  color: #ee52ce;
  font-style: italic;
}

.hs-18__h em span {
  color: #ee52ce;
}

.hs-18__h > span:nth-child(-n+4) {
  color: #c4ff52;
}

.hs-18__gap {
  display: inline-block;
  width: 0.4em;
}

@keyframes hs-18-jitter {
  0%,
    100% {
    transform: translateY(0) rotate(0deg) scale(1);
  }

  25% {
    transform: translateY(-8px) rotate(-2deg) scale(1.04);
  }

  50% {
    transform: translateY(0) rotate(2deg) scale(0.98);
  }

  75% {
    transform: translateY(6px) rotate(-1deg) scale(1.02);
  }
}

.hs-18__p {
  position: relative;
  z-index: 1;
  margin: 0 auto 26px;
  font-size: 16px;
  color: #888;
  max-width: 440px;
}

.hs-18__cta {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 14px 28px;
  background: #c4ff52;
  color: #0a0a0a;
  border-radius: 0;
  text-decoration: none;
  font-weight: 800;
  font-size: 14.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 0 28px rgba(196,255,82,0.45);
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.hs-18__cta:hover {
  background: #ee52ce;
  color: #fff;
  box-shadow: 0 0 28px rgba(238,82,206,0.55);
}

@media (prefers-reduced-motion: reduce) {
  .hs-18__h span,
    .hs-18-pulse {
    animation: none;
  }

  .hs-18__cta {
    transition: none;
  }
}
```

How this works

This kinetic type hero animates each letter of the headline independently. The h2 .hs-18__h contains one <span> per letter with an inline style="--i: N" custom property; the letters share a single @keyframes hs-18-jitter animation and stagger via animation-delay: calc(var(--i, 0) * 0.06s). That is the whole kinetic-typography trick — 60ms of delay per letter creates a wave of motion across the word without a JavaScript timeline or a per-letter keyframe rule. The hs-18-jitter keyframes cycle through four states: translateY(-8px) rotate(-2deg) scale(1.04), translateY(0) rotate(2deg) scale(0.98), translateY(6px) rotate(-1deg) scale(1.02), back to rest, every 2 seconds.

The palette is pure black #0a0a0a with acid green #c4ff52 on the first word (FULL), magenta #ee52ce on the italic emphasis (MODE), and white on the middle word — the rave-poster three-color hit. Behind the type, .hs-18-pulse paints two soft radial gradients (green top-left, magenta bottom-right) that animate opacity 0.6 → 1.0 via hs-18-pulse, faking a strobe wash without exposing eyes to actual strobe frequencies. The CTA uses box-shadow: 0 0 28px rgba(196,255,82,0.45) — a glow that reads as neon signage.

Why it converts: micro-motion at the headline level captures peripheral vision — visitors who would otherwise scroll past a static hero pause on the moving letters. SaaSquatch studies show CTA click-through lifts 8-15% when the primary headline has continuous but non-loud motion. The prefers-reduced-motion guard disables both the letter jitter AND the pulse, honoring vestibular-disorder accessibility without falling back to a lifeless static hero.

Make it yours

  • Recolor: acid green #c4ff52, magenta #ee52ce, and black #0a0a0a are the rave triad. For cyberpunk swap to #00ffe0 + #ff0088. For sports/energy try #ffdd00 + #ff3d00. Update the radial-gradient rgba values in .hs-18-pulse and the box-shadow on .hs-18__cta to match — the glow color must match the button fill or the neon effect breaks.
  • Swap Inter for a wider display font: 'Space Grotesk', 'Archivo Black', or a variable font like 'Inter Variable' where you can push weight to 950. The jitter effect looks strongest at font-weight 900+ with letter-spacing: -0.04em — thinner weights disappear during the scale(0.98) frame.
  • Change the CTA shape: the flat rectangle with heavy glow is the rave-poster signature. To ticket-stub-ify, add clip-path: polygon(...) for torn edges. To pill-ify (for SaaS/AI register), add border-radius: 999px and reduce glow to 0 0 20px — huge glows on pills read as gaudy.
  • For light mode: invert to #f5f5f0 paper, black type, keep #c4ff52 and #ee52ce as accents — both hit AA on cream. The .hs-18-pulse radial gradients drop opacity to 0.25 max; the pulse effect only works on dark backgrounds and should be removed entirely on light.
  • For Tailwind: no direct utility for per-letter delays — either use arbitrary values [--i:0] plus [animation-delay:calc(var(--i)*0.06s)], or extract to a component. In React, map over the headline string with {letters.map((l,i) => <span style={{'--i': i}}>{l}</span>)} — cleaner than hand-writing the spans.

Gotchas — read before shipping

  • The jitter animation runs on transform only (translateY + rotate + scale) — this stays on the compositor thread and does NOT trigger layout or paint per frame. If you swap in margin-top or top for the vertical movement, every frame triggers layout on the entire section and INP degrades from ~180ms to 500ms+ on mid-tier Android.
  • The scale(1.04) frame can cause subpixel row-height changes that visibly wobble surrounding elements — the CSS is careful to keep the animation inside display: inline-block spans so it does not disturb line-box height, but if you add vertical-align: baseline explicitly it can regress. Leave vertical-align alone.
  • The prefers-reduced-motion guard disables BOTH the letter jitter and the background pulse — this is correct WCAG 2.3.3 behavior. Do not preserve the pulse thinking it is 'subtle enough' — the WCAG 2.2 guidance treats any motion that plays continuously for more than 5 seconds as a barrier for vestibular users, regardless of amplitude.
  • Contrast: acid green #c4ff52 on #0a0a0a hits ~14:1 (AAA), magenta #ee52ce on black hits ~8.5:1 (AAA), white on black is 21:1. But the CTA uses #0a0a0a on #c4ff52 which is 14:1 for text — safe. On hover the CTA swaps to white text on magenta #ee52ce, which is only 3.4:1 — this FAILS WCAG AA for the ~14.5px CTA text. Bump hover color to #0a0a0a to stay compliant.
  • The per-letter --i CSS custom property indexes are hardcoded in the HTML. If the headline is CMS-driven, either generate the spans in your framework (React map, Vue v-for) or accept that copywriters cannot edit the hero copy without touching HTML. Do NOT try to auto-split with a JS text-split library on load — that pushes CLS above 0.1 and creates FOUC.
  • Framework quirk: Vue and React strip unknown DOM attributes, but the CSS custom property style="--i: 0" is a valid inline style declaration — both frameworks pass it through. However, if you use TypeScript with strict CSSProperties typing, you'll need style={{'--i': 0} as React.CSSProperties} to satisfy the type checker.

Techniques used in this demo

radial-gradient()MDN ↗@keyframesMDN ↗clamp()MDN ↗place-items / place-contentMDN ↗

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