51 CSS Buttons
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All 51 in 51 CSS Buttons

  1. 01CSS Submit Button (Form Primary)
  2. 02CSS Primary and Secondary Button Pair
  3. 03CSS Ghost / Outline Button
  4. 04CSS Icon-Only Button with Accessible Tooltip
  5. 05CSS Gradient CTA Button
  6. 06CSS Loading Spinner Button (State Transition)
  7. 07CSS Disabled Button State (Full State Reference)
  8. 08CSS Button Group Component (Segmented Radio-Like)
  9. 09CSS Add to Cart Button
  10. 10CSS Download Progress Button
  11. 11CSS Like Heart Button
  12. 12CSS Confirm Delete Button
  13. 13CSS Play Pause Button
  14. 14CSS Subscribe Confetti Button
  15. 15CSS Magnetic Mercury Ripple Button
  16. 16CSS Brutalist Glitch Button
  17. 17CSS Neon Plasma Burst Button
  18. 18CSS Clay Press Button
  19. 19CSS Editorial Ink Spread Button
  20. 20CSS Particle Shard Burst Button
  21. 21CSS Brushed Brass Plate Button
  22. 22CSS Washi Paper Crane Button
  23. 23CSS Frosted Ice Cube Button
  24. 24CSS Vintage Typewriter Key Button
  25. 25CSS Lacquered Walnut Wood Button
  26. 26CSS Pharma Gel Capsule Button
  27. 27CSS Aged Copper Coin Button
  28. 28CSS Origami Fortune Cookie Button
  29. 29CSS Holographic Foil Sticker Button
  30. 30CSS Brutalist Concrete Slab Button
  31. 31CSS Mercury Bead Morph Button
  32. 32CSS Soft Pill Modern SaaS Button
  33. 33CSS Masking Tape Label Button
  34. 34CSS Obsidian Glass Shard Button
  35. 35CSS Wine Velvet Ribbon Button
  36. 36CSS LED Segment Display Button
  37. 37CSS Cassette Mixtape Label Button
  38. 38CSS Chalkboard Menu Button
  39. 39CSS Vinyl Record Sleeve Ripple Button
  40. 40CSS Polaroid Snapshot Button
  41. 41CSS Airline Boarding Pass Button
  42. 42CSS Aged Brass Subway Token Button
  43. 43CSS Vintage Rx Pharmacy Label Button
  44. 44CSS Bakelite Radio Dial Toggle Button
  45. 45CSS Regal Postage Stamp Button
  46. 46CSS Victorian Cigar Band Foil Button
  47. 47CSS Vintage Calculator Key Button
  48. 48CSS Toolbox Latch Spotlight Button
  49. 49CSS Receipt Paper Total Count-Up Button
  50. 50CSS IBM Punch Card Magnetic Follow Button
  51. 51CSS Brass Periscope Lens Button
Pure CSSMIT licensed

CSS Mercury Bead Morph Button

A bead of mercury detaches from the button, stretches, and is reabsorbed on hover — genuine metaball merging, produced by an SVG goo filter (blur, then a hard alpha threshold) applied to a layer of plain CSS shapes. No canvas, no WebGL, no JavaScript.

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The code

<div class="cb-31">
  <div class="cb-31__stage">
    <svg class="cb-31__defs" aria-hidden="true" focusable="false" width="0" height="0">
      <filter id="cb-31-goo">
        <feGaussianBlur in="SourceGraphic" stdDeviation="7" result="b"></feGaussianBlur>
        <feColorMatrix in="b" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 20 -9" result="g"></feColorMatrix>
        <feBlend in="SourceGraphic" in2="g"></feBlend>
      </filter>
    </svg>
    <button class="cb-31__btn" type="button">
      <span class="cb-31__goo" aria-hidden="true">
        <span class="cb-31__pill"></span>
        <span class="cb-31__bead"></span>
      </span>
      <span class="cb-31__label">Liquify</span>
    </button>
  </div>
</div>
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap');

.cb-31 {
  --bg: #0c0e12;
  --hg: #c9d2dc;
  --hg-hi: #ffffff;
  --hg-lo: #5c6672;
  --ink: #0b0d11;
  --sans: "Space Grotesk",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  display: block;
  background: radial-gradient(36rem 22rem at 50% 45%, #1b2029, transparent 72%), var(--bg);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: light) {
  .cb-31:not([data-theme="dark"]) {
    --bg: #e7eaee;
  }
}

.cb-31[data-theme="light"] {
  --bg: #e7eaee;
}

.cb-31,
.cb-31 *,
.cb-31 *::before,
.cb-31 *::after {
  box-sizing: border-box;
}

.cb-31__stage {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: clamp(1.5rem,6vw,4rem);
}

.cb-31__defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.cb-31__btn {
  position: relative;
  cursor: pointer;
  border: 0;
  background: transparent;
  width: 16rem;
  height: 8rem;
  padding: 0;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}

.cb-31__label {
  position: absolute;
  z-index: 3;
  left: 3.9rem;
  top: 50%;
  translate: 0 -50%;
  transition: translate .5s cubic-bezier(.16,1,.3,1), color .4s ease;
}

.cb-31__goo {
  position: absolute;
  inset: 0;
  z-index: 1;
  filter: url(#cb-31-goo);
}
/* Both shapes paint the SAME gradient at the SAME size, so at rest the bead is
   pixel-identical to the pill's left cap and disappears into it completely. */

.cb-31__pill,
.cb-31__bead {
  position: absolute;
  border-radius: 999px;
  background-image: radial-gradient(120% 120% at 30% 20%, var(--hg-hi), transparent 55%), linear-gradient(160deg, var(--hg), var(--hg-lo));
  background-size: 8.2rem 3.2rem, 8.2rem 3.2rem;
  background-position: 0 0, 0 0;
  background-repeat: no-repeat;
}

.cb-31__pill {
  left: 2.2rem;
  top: 2.4rem;
  width: 8.2rem;
  height: 3.2rem;
}

.cb-31__bead {
  left: 2.2rem;
  top: 2.4rem;
  width: 3.2rem;
  height: 3.2rem;
  transition: translate .75s cubic-bezier(.16,1,.3,1), scale .75s cubic-bezier(.16,1,.3,1);
}

.cb-31__btn:is(:hover,:focus-visible) .cb-31__bead {
  translate: 8.4rem 0;
  scale: .62;
}

.cb-31__btn:is(:hover,:focus-visible) .cb-31__label {
  translate: .4rem -50%;
}

.cb-31__btn:focus-visible {
  outline: 2px solid var(--hg);
  outline-offset: 2px;
  border-radius: 1rem;
}

.cb-31__btn:active .cb-31__bead {
  scale: .5;
}

.cb-31__btn:disabled {
  cursor: not-allowed;
  filter: grayscale(1) brightness(.8);
}

@media (prefers-reduced-motion: reduce) {
  .cb-31__bead,
    .cb-31__label {
    transition: none;
  }
}

@media (forced-colors: active) {
  .cb-31__goo {
    display: none;
  }

  .cb-31__btn {
    border: 1px solid ButtonText;
    background: ButtonFace;
    width: auto;
    height: auto;
    padding: 1rem 2rem;
  }

  .cb-31__label {
    position: static;
    translate: none;
    color: ButtonText;
  }
}
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 Button 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: CSS Mercury Bead Morph Button
Source: https://codefronts.com/components/css-buttons/css-mercury-bead-morph-button/

A bead of mercury detaches from the button, stretches, and is reabsorbed on hover — genuine metaball merging, produced by an SVG goo filter (blur, then a hard alpha threshold) applied to a layer of plain CSS shapes. No canvas, no WebGL, no JavaScript.
## HTML
```html
<div class="cb-31">
  <div class="cb-31__stage">
    <svg class="cb-31__defs" aria-hidden="true" focusable="false" width="0" height="0">
      <filter id="cb-31-goo">
        <feGaussianBlur in="SourceGraphic" stdDeviation="7" result="b"></feGaussianBlur>
        <feColorMatrix in="b" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 20 -9" result="g"></feColorMatrix>
        <feBlend in="SourceGraphic" in2="g"></feBlend>
      </filter>
    </svg>
    <button class="cb-31__btn" type="button">
      <span class="cb-31__goo" aria-hidden="true">
        <span class="cb-31__pill"></span>
        <span class="cb-31__bead"></span>
      </span>
      <span class="cb-31__label">Liquify</span>
    </button>
  </div>
</div>
```
## CSS
```css
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap');

.cb-31 {
  --bg: #0c0e12;
  --hg: #c9d2dc;
  --hg-hi: #ffffff;
  --hg-lo: #5c6672;
  --ink: #0b0d11;
  --sans: "Space Grotesk",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  display: block;
  background: radial-gradient(36rem 22rem at 50% 45%, #1b2029, transparent 72%), var(--bg);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: light) {
  .cb-31:not([data-theme="dark"]) {
    --bg: #e7eaee;
  }
}

.cb-31[data-theme="light"] {
  --bg: #e7eaee;
}

.cb-31,
.cb-31 *,
.cb-31 *::before,
.cb-31 *::after {
  box-sizing: border-box;
}

.cb-31__stage {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: clamp(1.5rem,6vw,4rem);
}

.cb-31__defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.cb-31__btn {
  position: relative;
  cursor: pointer;
  border: 0;
  background: transparent;
  width: 16rem;
  height: 8rem;
  padding: 0;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}

.cb-31__label {
  position: absolute;
  z-index: 3;
  left: 3.9rem;
  top: 50%;
  translate: 0 -50%;
  transition: translate .5s cubic-bezier(.16,1,.3,1), color .4s ease;
}

.cb-31__goo {
  position: absolute;
  inset: 0;
  z-index: 1;
  filter: url(#cb-31-goo);
}
/* Both shapes paint the SAME gradient at the SAME size, so at rest the bead is
   pixel-identical to the pill's left cap and disappears into it completely. */

.cb-31__pill,
.cb-31__bead {
  position: absolute;
  border-radius: 999px;
  background-image: radial-gradient(120% 120% at 30% 20%, var(--hg-hi), transparent 55%), linear-gradient(160deg, var(--hg), var(--hg-lo));
  background-size: 8.2rem 3.2rem, 8.2rem 3.2rem;
  background-position: 0 0, 0 0;
  background-repeat: no-repeat;
}

.cb-31__pill {
  left: 2.2rem;
  top: 2.4rem;
  width: 8.2rem;
  height: 3.2rem;
}

.cb-31__bead {
  left: 2.2rem;
  top: 2.4rem;
  width: 3.2rem;
  height: 3.2rem;
  transition: translate .75s cubic-bezier(.16,1,.3,1), scale .75s cubic-bezier(.16,1,.3,1);
}

.cb-31__btn:is(:hover,:focus-visible) .cb-31__bead {
  translate: 8.4rem 0;
  scale: .62;
}

.cb-31__btn:is(:hover,:focus-visible) .cb-31__label {
  translate: .4rem -50%;
}

.cb-31__btn:focus-visible {
  outline: 2px solid var(--hg);
  outline-offset: 2px;
  border-radius: 1rem;
}

.cb-31__btn:active .cb-31__bead {
  scale: .5;
}

.cb-31__btn:disabled {
  cursor: not-allowed;
  filter: grayscale(1) brightness(.8);
}

@media (prefers-reduced-motion: reduce) {
  .cb-31__bead,
    .cb-31__label {
    transition: none;
  }
}

@media (forced-colors: active) {
  .cb-31__goo {
    display: none;
  }

  .cb-31__btn {
    border: 1px solid ButtonText;
    background: ButtonFace;
    width: auto;
    height: auto;
    padding: 1rem 2rem;
  }

  .cb-31__label {
    position: static;
    translate: none;
    color: ButtonText;
  }
}
```

How this works

The goo is two SVG primitives: blur everything together, then push the alpha channel through a steep curve so overlapping blurs snap into one continuous shape:

<filter id="cb-31-goo">
  <feGaussianBlur in="SourceGraphic" stdDeviation="7" result="b"/>
  <feColorMatrix in="b" mode="matrix"
    values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 20 -9" result="g"/>
  <feBlend in="SourceGraphic" in2="g"/>
</filter>

The last row of the matrix is the whole trick: multiply alpha by 20 and subtract 9, and a soft blur becomes a hard edge. The filter goes on a wrapper containing the pill and the bead — never on the text:

.cb-31__goo{ filter:url(#cb-31-goo); }
/* rest: the bead exactly covers the pill's cap, so it is invisible */
.cb-31__bead{ left:2.2rem; top:2.4rem; width:3.2rem; height:3.2rem; }
.cb-31__btn:hover .cb-31__bead{ translate:8.4rem 0; scale:.62; }

Two details make the illusion hold: the bead matches the pill's cap exactly at rest, and both elements paint the identical gradient at the identical background-size, so there is no tonal seam to give the hidden lump away. On hover it shrinks as it travels — a droplet pinching off rather than a ball sliding out. The label sits outside the filtered layer at a higher z-index, so it stays perfectly sharp while the metal behind it flows. A chrome highlight gradient on both shapes sells the liquid metal.

Make it yours

  • Bead travel and size live in the hover rule: a shorter throw with a larger scale reads as thicker liquid, a longer throw with a smaller one as a thin drip.
  • Raise stdDeviation for a gloopier merge — but the alpha multiplier must rise with it or edges go soft.
  • Recolour with --hg; keep the highlight near-white or it stops looking metallic.
  • Add a second bead with a delay for a chain of droplets.

Gotchas — read before shipping

  • Never apply the goo filter to an element containing text — feGaussianBlur blurs glyphs and no amount of thresholding brings them back.
  • SVG filters force a software raster pass on some GPUs; one instance is fine, twenty in a list is not.
  • The filter's id must be unique per page. Namespaced ids (cb-31-goo) are why every demo in this collection is numerically scoped.
  • filter creates a containing block and clips at the filter region — give the wrapper generous padding or the bead gets cut off mid-flight.
  • Firefox and Safari rasterise filter regions at different resolutions; verify the threshold values in both, and keep stdDeviation modest.
  • A bead that is supposed to be hidden at rest must match the shape it hides inside — same size AND the same painted gradient (background-size and background-position, not merely the same colour stops). The goo threshold merges silhouettes; it does not blend tones, so a lighter bead shows through as a disc behind your label.

Browser support

ChromeSafariFirefoxEdge
88+14+78+88+

SVG filters via filter:url() are supported in all modern engines. Rendering fidelity of feColorMatrix thresholds varies slightly between Blink, WebKit and Gecko — test the exact values.

Techniques used in this demo

filterMDN ↗radial-gradient()MDN ↗clamp()MDN ↗place-items / place-contentMDN ↗:focus-visibleMDN ↗

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