47 CSS Toggles & Switches42 / 47

Pure CSSMIT licensed

Glassmorphism

A frosted-glass pill with a backdrop-blurred thumb. The colored backdrop tints the glass; the thumb floats above it. Modern dark-mode aesthetic.

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Live Demo
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The code

<label class="tgl-42">
  <input class="tgl-42__input" type="checkbox" checked>
  <span class="tgl-42__track" aria-hidden="true">
    <span class="tgl-42__thumb"></span>
  </span>
  <span class="tgl-42__label">Focus mode</span>
</label>
.tgl-42 {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  color: #f0eeff;
  min-height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 48px 20px;
  background: #14141e;
  box-sizing: border-box;
}

.tgl-42__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.tgl-42__track {
  position: relative;
  width: 56px;
  height: 30px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  transition: background 0.3s ease, border-color 0.3s ease;
  box-sizing: border-box;
}

.tgl-42__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 2px 6px rgba(0,0,0,0.18);
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
}

.tgl-42__input:checked ~ .tgl-42__track {
  background: rgba(124,108,255,0.32);
  border-color: rgba(124,108,255,0.55);
}

.tgl-42__input:checked ~ .tgl-42__track .tgl-42__thumb {
  /* Inner width: 56 - 2 = 54. Thumb 24. Max left to stay inside: 54-24-2 = 28. */
  left: 28px;
  background: rgba(255,255,255,0.95);
}

.tgl-42__input:focus-visible ~ .tgl-42__track {
  outline: 2px solid rgba(255,255,255,0.7);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .tgl-42__track,
    .tgl-42__thumb {
    transition: none;
  }
}
/* No JavaScript — a blurred 8%-white glass track over a gradient backdrop tints violet on :checked while a denser glass puck slides across. */
Paste this into ChatGPT, Claude, Cursor, or any coding assistant. The block below is pre-framed with everything the AI needs to integrate this demo into your project — markup, styles, scoping notes, and the source URL. Hit Copy and paste straight into your chat.
Here's a working CSS Toggles & Switche 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: Glassmorphism
Source: https://codefronts.com/components/css-toggles-switches/glassmorphism/

A frosted-glass pill with a backdrop-blurred thumb. The colored backdrop tints the glass; the thumb floats above it. Modern dark-mode aesthetic.
## HTML
```html
<label class="tgl-42">
  <input class="tgl-42__input" type="checkbox" checked>
  <span class="tgl-42__track" aria-hidden="true">
    <span class="tgl-42__thumb"></span>
  </span>
  <span class="tgl-42__label">Focus mode</span>
</label>
```
## CSS
```css
.tgl-42 {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  color: #f0eeff;
  min-height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 48px 20px;
  background: #14141e;
  box-sizing: border-box;
}

.tgl-42__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.tgl-42__track {
  position: relative;
  width: 56px;
  height: 30px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  transition: background 0.3s ease, border-color 0.3s ease;
  box-sizing: border-box;
}

.tgl-42__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 2px 6px rgba(0,0,0,0.18);
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
}

.tgl-42__input:checked ~ .tgl-42__track {
  background: rgba(124,108,255,0.32);
  border-color: rgba(124,108,255,0.55);
}

.tgl-42__input:checked ~ .tgl-42__track .tgl-42__thumb {
  /* Inner width: 56 - 2 = 54. Thumb 24. Max left to stay inside: 54-24-2 = 28. */
  left: 28px;
  background: rgba(255,255,255,0.95);
}

.tgl-42__input:focus-visible ~ .tgl-42__track {
  outline: 2px solid rgba(255,255,255,0.7);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .tgl-42__track,
    .tgl-42__thumb {
    transition: none;
  }
}
```

## JavaScript
```js
/* No JavaScript — a blurred 8%-white glass track over a gradient backdrop tints violet on :checked while a denser glass puck slides across. */
```

How this works

The label itself carries a soft two-tone gradient backdrop — the crucial supporting layer, because backdrop-filter needs something non-flat behind it to refract. The 56×30 track is 8%-white glass with a 10px blur and hairline light border; checking it tints the pane toward violet at 32% alpha, keeping the material read.

The 24px thumb is denser glass (85% white, 6px blur) with an inset top highlight so it reads as a puck resting ON the pane. Slide math is annotated in-source: 54px inner − 24px thumb − 2px inset = left:28px.

Make it yours

  • Recolor the backdrop gradient — the glass adapts automatically.
  • Frost harder with blur(16px) + higher track alpha for a milkier pane.
  • Add an @supports fallback with a solid track for old WebViews (see demo 21).
  • Tint the checked state amber/green for semantic states.

Gotchas — read before shipping

  • Never put a solid background on the track's parent chain between it and the gradient — it blanks the refraction.
  • Keep checked-state tints ≤ ~35% alpha or the glass collapses into paint.
  • Translucency erodes contrast: the focus ring here is 70% white minimum — don't soften it further.

Browser support

ChromeSafariFirefoxEdge
76+9+ (-webkit-)103+76+

backdrop-filter with -webkit- prefix; degrades to translucent flat fills where unsupported.

Techniques used in this demo

backdrop-filterMDN ↗

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