Added 2 Sept 2026

mail-client-skeleton-15879

Mail Client Skeleton

Skeletons & Shimmers

Mail Client Skeleton

Three-pane inbox placeholder — an icon rail, a message list with one row already marked as selected, and a reading pane with a sender block and ragged body lines — under one sweep across all three panes.

Skeletons & Shimmersmailinboxthree-paneskeletonwireframe

lines of CSS: 138lines 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.

mail-client-skeleton-15879.css

.fx-v14-sk-mail-15878 {
  position: relative;
  display: flex;
  width: 258px;
  height: 144px;
  overflow: hidden;
  border-radius: 0.55rem;
  background: #0f1626;
  border: 1px solid #253049;
  font-family: system-ui, sans-serif;
}
.fx-v14-sk-mail-15878 .rail {
  flex: none;
  display: grid;
  gap: 10px;
  align-content: start;
  justify-items: center;
  width: 34px;
  padding: 9px 0;
  background: #0c1220;
  border-right: 1px solid #1e2a44;
}
.fx-v14-sk-mail-15878 .rail i {
  width: 18px;
  height: 7px;
  border-radius: 3px;
  background: #1e293b;
}
.fx-v14-sk-mail-15878 .rail i.lg {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: #2a3b5f;
}
.fx-v14-sk-mail-15878 .list {
  flex: none;
  display: grid;
  gap: 9px;
  align-content: start;
  width: 82px;
  padding: 9px 7px;
  border-right: 1px solid #1e2a44;
}
.fx-v14-sk-mail-15878 .list .rw {
  display: grid;
  gap: 5px;
  padding: 3px 4px;
  border-radius: 0.25rem;
}
.fx-v14-sk-mail-15878 .list .rw.on {
  background: #1c2c4d;
  box-shadow: inset 2px 0 0 #38bdf8;
}
.fx-v14-sk-mail-15878 .list b {
  display: block;
  width: 68%;
  height: 6px;
  border-radius: 3px;
  background: #33456b;
}
.fx-v14-sk-mail-15878 .list u {
  display: block;
  width: 100%;
  height: 5px;
  border-radius: 3px;
  background: #1e293b;
}
.fx-v14-sk-mail-15878 .rd {
  flex: 1;
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 10px;
}
.fx-v14-sk-mail-15878 .rd .hd {
  display: flex;
  align-items: center;
  gap: 7px;
}
.fx-v14-sk-mail-15878 .rd .hd > div {
  flex: 1;
  display: grid;
  gap: 5px;
}
.fx-v14-sk-mail-15878 .rd .av {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #2a3b5f;
}
.fx-v14-sk-mail-15878 .rd b {
  display: block;
  width: 72%;
  height: 7px;
  border-radius: 3px;
  background: #33456b;
}
.fx-v14-sk-mail-15878 .rd u {
  display: block;
  width: 46%;
  height: 5px;
  border-radius: 3px;
  background: #1e293b;
}
.fx-v14-sk-mail-15878 .rd p {
  margin: 0;
  height: 6px;
  border-radius: 3px;
  background: #1a2437;
}
.fx-v14-sk-mail-15878 .rd p.s { width: 74%; }
.fx-v14-sk-mail-15878::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 28%, rgba(148,197,255,0.09) 50%, transparent 72%);
  animation: fx-v14-sk-mail-15878-sweep 2s ease-in-out infinite;
}
@keyframes fx-v14-sk-mail-15878-sweep {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@media (prefers-reduced-motion: reduce) {
  .fx-v14-sk-mail-15878,
  .fx-v14-sk-mail-15878::before,
  .fx-v14-sk-mail-15878::after,
  .fx-v14-sk-mail-15878 *,
  .fx-v14-sk-mail-15878 *::before,
  .fx-v14-sk-mail-15878 *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    animation-delay: 0ms !important;
    transition-duration: 1ms !important;
    transition-delay: 0ms !important;
  }
}

mail-client-skeleton-15879.html

<div class="fx-v14-sk-mail-15878">
  <div class="rail">
    <i class="lg"></i>
    <i></i>
    <i></i>
    <i></i>
    <i></i>
  </div>
  <div class="list">
    <div class="rw on">
      <b></b>
      <u></u>
    </div>
    <div class="rw ">
      <b></b>
      <u></u>
    </div>
    <div class="rw ">
      <b></b>
      <u></u>
    </div>
    <div class="rw ">
      <b></b>
      <u></u>
    </div>
  </div>
  <div class="rd">
    <div class="hd">
      <i class="av"></i>
      <div>
        <b></b>
        <u></u>
      </div>
    </div>
    <p></p>
    <p></p>
    <p class="s"></p>
    <p></p>
    <p class="s"></p>
  </div>
</div>

What do I do with this?

Put mail-client-skeleton-15879.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.
Then put the class on the element you want it on: <button class="fx-v14-sk-mail-15878">. 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 mail-client-skeleton-15879

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 mail-client-skeleton-15879

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

30 more effects in Skeletons & Shimmers

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 Skeletons & Shimmers

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

What's included

Copy-ready HTML and CSS — 138 lines, no build step
7 export formats — HTML, CSS, React, Vue, Svelte, styled-components, Tailwind
Live customization for hue, saturation, scale and speed
Editable in the playground

npx hoverlab add mail-client-skeleton-15879
writes it into your project
npx hoverlab dna mail-client-skeleton-15879
hands it to your agent

Licence

Free to copy and use in personal and non-commercial projects, in as many as you like, with no attribution. Shipping it in client work or a paid product needs Pro ($79 once). Read the licence.

Works with

FrameworksPlain HTMLReactVueSvelteTailwindstyled-components

AgentsCLIMCPFigma

Where this fits

Full sections that use this kind of element.

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7 variations of Mail Client Skeleton

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

Ultraviolet
electric
by Hoverlab
Two-thirds of the wheel the other way, still vivid.
Open
Amber
warm
by Hoverlab
A short warm nudge with the saturation well up.
Open
Tidepool
cool
by Hoverlab
The furthest cool rotation, toward greens and cyans.
Open
Petite
proportion
by Hoverlab
The smallest this scales to and still reads.
Open
Newsprint
muted
by Hoverlab
The flattest this gets while still being a colour.
Open
Candy
signature
by Hoverlab
Rotated warm past yellow, vivid, compact and a little quick.
Open
Half Time
tempo
by Hoverlab
Every animation takes twice as long. Colour untouched.
Open

Mail Client Skeleton

What do I do with this?

What's included

Works with

License

Motion safety

30 more effects in Skeletons & Shimmers

Shipping one commercially

7 variations of Mail Client Skeleton

Ultraviolet

Amber

Tidepool

Petite

Newsprint

Candy

Half Time