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Added 30 Aug 2026
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firefly-field-15483
Firefly Field
Glow & Neon

Firefly Field

Warm motes drifting over a dark clearing, each fading up and down on its own timing so the field never repeats.

Glow & Neonfirefliesmotesdriftambientnight
lines of CSS
46lines of CSS
dependencies
0dependencies
browser, for years
Everybrowser, for years
stops under reduced motion
Guardedstops under reduced motion
Backdrop
Open a live copy in

Vue, Svelte, styled-components and Tailwind exports are part of Pro. HTML, CSS and React are free forever.

firefly-field-15483.css
.fx-v13-gl-firefly-15482 {
  position: relative;
  width: 210px;
  height: 118px;
  border-radius: 0.7rem;
  overflow: hidden;
  background: radial-gradient(120% 100% at 50% 120%, #0b2419, #04070c 70%);
  box-shadow: inset 0 0 30px rgba(0,0,0,0.8);
}
.fx-v13-gl-firefly-15482 i {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fde68a;
  box-shadow: 0 0 12px 3px rgba(253,230,138,0.7);
  animation: fx-v13-gl-firefly-15482-drift 7s ease-in-out infinite;
}
.fx-v13-gl-firefly-15482 i:nth-child(1) { left: 12%; top: 62%; animation-delay: 0s;    animation-duration: 6.5s; }
.fx-v13-gl-firefly-15482 i:nth-child(2) { left: 30%; top: 34%; animation-delay: -1.1s; animation-duration: 8s; }
.fx-v13-gl-firefly-15482 i:nth-child(3) { left: 48%; top: 72%; animation-delay: -2.3s; animation-duration: 7.4s; }
.fx-v13-gl-firefly-15482 i:nth-child(4) { left: 62%; top: 26%; animation-delay: -3.4s; animation-duration: 9s; }
.fx-v13-gl-firefly-15482 i:nth-child(5) { left: 76%; top: 58%; animation-delay: -4.2s; animation-duration: 6.8s; }
.fx-v13-gl-firefly-15482 i:nth-child(6) { left: 88%; top: 40%; animation-delay: -5.1s; animation-duration: 8.6s; }
.fx-v13-gl-firefly-15482 i:nth-child(7) { left: 20%; top: 18%; animation-delay: -2.8s; animation-duration: 7.9s; }
@keyframes fx-v13-gl-firefly-15482-drift {
  0%, 100% { transform: translate(0, 0) scale(0.6); opacity: 0.15; }
  25%      { transform: translate(10px, -14px) scale(1); opacity: 1; }
  55%      { transform: translate(-8px, -26px) scale(0.8); opacity: 0.5; }
  80%      { transform: translate(6px, -10px) scale(1); opacity: 0.9; }
}

@media (prefers-reduced-motion: reduce) {
  .fx-v13-gl-firefly-15482,
  .fx-v13-gl-firefly-15482::before,
  .fx-v13-gl-firefly-15482::after,
  .fx-v13-gl-firefly-15482 *,
  .fx-v13-gl-firefly-15482 *::before,
  .fx-v13-gl-firefly-15482 *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    animation-delay: 0ms !important;
    transition-duration: 1ms !important;
    transition-delay: 0ms !important;
  }
}
firefly-field-15483.html
<div class="fx-v13-gl-firefly-15482">
  <i></i>
  <i></i>
  <i></i>
  <i></i>
  <i></i>
  <i></i>
  <i></i>
</div>

What do I do with this?

  1. Put firefly-field-15483.css anywhere your page already loads CSS from — in Next.js that is app/globals.css, or any stylesheet with a <link> in your HTML.
  2. Then put the class on the element you want it on: <button class="fx-v13-gl-firefly-15482">. The CSS does nothing until a class name in it matches something on the page.
  • Link the stylesheet, then paste the markup wherever you need it.
npx hoverlab add firefly-field-15483

What's included

  • The markup and the stylesheet, in whichever framework you pick
  • No runtime dependencies

Works with

  • React
  • Vue
  • Svelte
  • Tailwind
  • styled-components
  • Plain CSS

npx hoverlab add firefly-field-15483

Or over MCP, from your editor's agent — no account needed.

License

Free to read, copy and install, for personal and non-commercial projects. Shipping it in client work or a paid product needs Pro ($79 once). The source lands in your repo and stops being ours — no attribution, nothing to upgrade.

Was this useful?

Motion safety

Static estimate, read from the CSS

Reduced motion
Guarded

Ships a prefers-reduced-motion block, so the loop settles into its end state for visitors who ask for less motion.

What it animates
Compositor only

Only transform, opacity or filter: the GPU can run it without re-laying-out or repainting the page.

Flashing (WCAG 2.3.1)
Under 3 flashes/s

Its brightest loop is about 0.3 a second. Estimated from duration, iterations and keyframes, not from rendered frames.

Layout shift (CLS)
No shift expected

Nothing it animates moves or resizes the box in flow. Measured in Chromium: no layout shifts in 4 s.

Every row is read from the shipped CSS. Only a figure marked measured came from a browser. Customizing the speed changes the timing, so recheck a customized copy. How it is computed

32 more effects in Glow & Neon

All of them free to read, copy and install — no account, no locked tiles, no watermarked preview. The whole catalog is open, and so are the API and the CLI.

Browse Glow & Neon

Shipping one commercially

Copying the code is free. Putting it in client work or a paid product is what Pro is for — the licence, not the access.

  • A commercial licence for everything in the catalog
  • Unlimited bundle exports, in Vue, Svelte and Tailwind
  • One payment — no subscription, nothing to renew
Pro — $79 once

7 variations of Firefly Field

Finished looks, each one a position in the customizer above. Copy any of them, or open it and keep moving the sliders.