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Added 30 Aug 2026
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unfolding-box-15471
Unfolding Box
3D & Perspective

Unfolding Box

Four indigo flaps hinged to an isometric base that swing outward together to reveal the mark printed inside.

3D & Perspectiveunfoldflapsisometrichingereveal
lines of CSS
59lines 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.

unfolding-box-15471.css
.fx-v13-3d-box-15470 {
  width: 130px;
  height: 130px;
  display: grid;
  place-items: center;
  perspective: 420px;
}
.fx-v13-3d-box-15470 .s {
  position: relative;
  width: 58px;
  height: 58px;
  transform-style: preserve-3d;
  transform: rotateX(56deg) rotateZ(-38deg);
  background: #1e1b4b;
  box-shadow: 0 0 0 1px rgba(129,140,248,0.5);
}
.fx-v13-3d-box-15470 b {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  color: #a5b4fc;
}
.fx-v13-3d-box-15470 i {
  position: absolute;
  width: 58px;
  height: 58px;
  background: linear-gradient(160deg, #4338ca, #312e81);
  box-shadow: 0 0 0 1px rgba(129,140,248,0.45);
  animation: fx-v13-3d-box-15470-open 4.4s ease-in-out infinite alternate;
}
.fx-v13-3d-box-15470 .n { top: 0;    left: 0; transform-origin: top;    }
.fx-v13-3d-box-15470 .s2 { bottom: 0; left: 0; transform-origin: bottom; }
.fx-v13-3d-box-15470 .e { top: 0; right: 0; transform-origin: right; }
.fx-v13-3d-box-15470 .w { top: 0; left: 0;  transform-origin: left;  }
.fx-v13-3d-box-15470 .n  { animation-name: fx-v13-3d-box-15470-n; }
.fx-v13-3d-box-15470 .s2 { animation-name: fx-v13-3d-box-15470-s; }
.fx-v13-3d-box-15470 .e  { animation-name: fx-v13-3d-box-15470-e; }
.fx-v13-3d-box-15470 .w  { animation-name: fx-v13-3d-box-15470-w; }
@keyframes fx-v13-3d-box-15470-n { 0% { transform: rotateX(0deg); } 100% { transform: rotateX(-105deg); } }
@keyframes fx-v13-3d-box-15470-s { 0% { transform: rotateX(0deg); } 100% { transform: rotateX(105deg); } }
@keyframes fx-v13-3d-box-15470-e { 0% { transform: rotateY(0deg); } 100% { transform: rotateY(-105deg); } }
@keyframes fx-v13-3d-box-15470-w { 0% { transform: rotateY(0deg); } 100% { transform: rotateY(105deg); } }

@media (prefers-reduced-motion: reduce) {
  .fx-v13-3d-box-15470,
  .fx-v13-3d-box-15470::before,
  .fx-v13-3d-box-15470::after,
  .fx-v13-3d-box-15470 *,
  .fx-v13-3d-box-15470 *::before,
  .fx-v13-3d-box-15470 *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    animation-delay: 0ms !important;
    transition-duration: 1ms !important;
    transition-delay: 0ms !important;
  }
}
unfolding-box-15471.html
<div class="fx-v13-3d-box-15470">
  <div class="s">
    <i class="n"></i>
    <i class="e"></i>
    <i class="s2"></i>
    <i class="w"></i>
    <b>✦</b>
  </div>
</div>

What do I do with this?

  1. Put unfolding-box-15471.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-v13-3d-box-15470">. 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 unfolding-box-15471

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 unfolding-box-15471

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)
No flashing found

No repeating change in opacity, colour or brightness large enough to count as a flash.

Layout shift (CLS)
No shift expected

Nothing it animates moves or resizes the box in flow. A category from the CSS, not a measurement for this effect.

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

31 more effects in 3D & Perspective

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 3D & Perspective

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 Unfolding Box

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