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Added 2 Sept 2026
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disclosure-tree-nav-15687
Disclosure Tree Nav
Navigation & Menus

Disclosure Tree Nav

A file tree with indent guide lines down each branch, where the collapsed folder turns its caret a quarter and rolls its children open along the guide while the tree grows to make room.

Navigation & Menustreeexplorerdisclosurefoldersexpand
lines of CSS
55lines of CSS
dependencies
0dependencies
browser, for years
Everybrowser, for years
motion only on interaction
Hovermotion only on interaction
Backdrop
Open a live copy in

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

disclosure-tree-nav-15687.css
.fx-v14-nav-tree-15686 {
  width: 190px;
  padding: 0.45rem 0.5rem;
  font-size: 0.72rem;
  background: #0d1526;
  border: 1px solid #253049;
  border-radius: 0.55rem;
}
.fx-v14-nav-tree-15686 .r {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  height: 20px;
  padding: 0 0.3rem;
  color: #94a3b8;
  border-radius: 0.25rem;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}
.fx-v14-nav-tree-15686 .r:hover { background: #172033; color: #e2e8f0; }
.fx-v14-nav-tree-15686 .ac { color: #7dd3fc; background: #16243c; }
.fx-v14-nav-tree-15686 .cv {
  width: 7px;
  height: 8px;
  background: #64748b;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  transition: transform 0.28s ease;
}
.fx-v14-nav-tree-15686 .op .cv { transform: rotate(90deg); }
.fx-v14-nav-tree-15686 .fd {
  width: 13px;
  height: 10px;
  border-radius: 1px 2px 2px 2px;
  background: #38bdf8;
  clip-path: polygon(0 0, 46% 0, 58% 22%, 100% 22%, 100% 100%, 0 100%);
}
.fx-v14-nav-tree-15686 .fl {
  width: 10px;
  height: 12px;
  background: #475569;
  clip-path: polygon(0 0, 68% 0, 100% 28%, 100% 100%, 0 100%);
}
.fx-v14-nav-tree-15686 .ch {
  margin-left: 0.62rem;
  padding-left: 0.5rem;
  border-left: 1px solid #253049;
}
.fx-v14-nav-tree-15686 .fold {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.34s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.24s ease;
}
.fx-v14-nav-tree-15686:hover .cl .cv { transform: rotate(90deg); }
.fx-v14-nav-tree-15686:hover .fold { max-height: 42px; opacity: 1; }
disclosure-tree-nav-15687.html
<nav class="fx-v14-nav-tree-15686">
  <div class="r op"><i class="cv"></i><i class="fd"></i>src</div>
  <div class="ch">
    <div class="r"><i class="fl"></i>index.tsx</div>
    <div class="r ac"><i class="fl"></i>app.tsx</div>
  </div>
  <div class="r cl"><i class="cv"></i><i class="fd"></i>components</div>
  <div class="ch fold">
    <div class="r"><i class="fl"></i>card.tsx</div>
    <div class="r"><i class="fl"></i>nav.tsx</div>
  </div>
  <div class="r"><i class="fl"></i>readme.md</div>
</nav>

What do I do with this?

  1. Put disclosure-tree-nav-15687.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-v14-nav-tree-15686">. 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 disclosure-tree-nav-15687

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 disclosure-tree-nav-15687

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
Brief motion, no guard

Animates briefly or on interaction. Only looping motion gets a guard in this catalog; copy the one from the Insights tab if this ships on a critical path.

What it animates
Reflows

Animates max-height (and background, color). The browser re-lays-out the page on every frame; prefer transform if you can.

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)
May shift layout

Animates max-height on a box in flow, so content beside or after it can move. 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

33 more effects in Navigation & Menus

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 Navigation & Menus

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 Disclosure Tree Nav

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