51 Tailwind CSS Buttons
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All 51 in 51 Tailwind CSS Buttons

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

Tailwind LED Segment Display Button

A machined instrument panel with a real seven-segment readout: every digit is seven CSS bars lit from a lookup table, glowing with a layered bloom against a smoked lens. Press it and the counter ticks up with correct segment-by-segment switching.

Live Demo
Plain CSSTailwind v4
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The code

<div class="tb-36 w-full min-h-svh grid place-items-center font-tb36-sans p-[clamp(1.5rem,6vw,4rem)]">
  <button type="button" aria-label="Increment the counter" class="tb-36__btn relative cursor-pointer grid place-items-center p-3.5 border border-tb36-edge rounded-[0.8rem] bg-[linear-gradient(180deg,var(--color-tb36-panel-hi),var(--color-tb36-panel))] shadow-[inset_0_1px_0_#ffffff24,inset_0_-2px_4px_#00000080,0_14px_26px_-12px_#000000cc] transition-[translate,box-shadow] duration-[160ms] [-webkit-tap-highlight-color:transparent] hover:-translate-y-px active:translate-y-0.5 active:shadow-[inset_0_2px_8px_#000000b3] focus-visible:outline-2 focus-visible:outline-offset-4 focus-visible:outline-tb36-on motion-reduce:transition-none">
    <span aria-hidden="true" class="tb-36__lens flex gap-2 px-4 py-3 rounded-[0.45rem] shadow-[inset_0_2px_8px_#000000d9,inset_0_0_0_1px_#ffffff0d]">
      <span class="tb-36__digit relative block w-6.5 h-11.5"><i class="tb-36__seg tb-36__seg--a" data-s="a" data-on="false"></i><i class="tb-36__seg tb-36__seg--b" data-s="b" data-on="false"></i><i class="tb-36__seg tb-36__seg--c" data-s="c" data-on="false"></i><i class="tb-36__seg tb-36__seg--d" data-s="d" data-on="false"></i><i class="tb-36__seg tb-36__seg--e" data-s="e" data-on="false"></i><i class="tb-36__seg tb-36__seg--f" data-s="f" data-on="false"></i><i class="tb-36__seg tb-36__seg--g" data-s="g" data-on="false"></i></span>
      <span class="tb-36__digit relative block w-6.5 h-11.5"><i class="tb-36__seg tb-36__seg--a" data-s="a" data-on="false"></i><i class="tb-36__seg tb-36__seg--b" data-s="b" data-on="false"></i><i class="tb-36__seg tb-36__seg--c" data-s="c" data-on="false"></i><i class="tb-36__seg tb-36__seg--d" data-s="d" data-on="false"></i><i class="tb-36__seg tb-36__seg--e" data-s="e" data-on="false"></i><i class="tb-36__seg tb-36__seg--f" data-s="f" data-on="false"></i><i class="tb-36__seg tb-36__seg--g" data-s="g" data-on="false"></i></span>
      <span class="tb-36__digit relative block w-6.5 h-11.5"><i class="tb-36__seg tb-36__seg--a" data-s="a" data-on="false"></i><i class="tb-36__seg tb-36__seg--b" data-s="b" data-on="false"></i><i class="tb-36__seg tb-36__seg--c" data-s="c" data-on="false"></i><i class="tb-36__seg tb-36__seg--d" data-s="d" data-on="false"></i><i class="tb-36__seg tb-36__seg--e" data-s="e" data-on="false"></i><i class="tb-36__seg tb-36__seg--f" data-s="f" data-on="false"></i><i class="tb-36__seg tb-36__seg--g" data-s="g" data-on="false"></i></span>
    </span>
    <span role="status" aria-live="polite" class="tb-36__live sr-only">0</span>
  </button>
</div>
@import "tailwindcss";

@theme {
  --color-tb36-bg: #0b0d0c;
  --color-tb36-bg: oklch(0.13 0.008 150);
  --color-tb36-panel: #1c211f;
  --color-tb36-panel: oklch(0.24 0.012 150);
  --color-tb36-panel-hi: #2c3331;
  --color-tb36-panel-hi: oklch(0.3 0.012 150);
  --color-tb36-edge: #0a0d0c;
  --color-tb36-edge: oklch(0.12 0.008 150);
  --color-tb36-lens: #0a0f0d;
  --color-tb36-lens: oklch(0.12 0.012 155);
  --color-tb36-on: #5ef08a;
  --color-tb36-on: oklch(0.84 0.2 148);
  --color-tb36-on-60: #5ef08a99;
  --color-tb36-on-60: oklch(0.84 0.2 148 / 0.55);
  --color-tb36-on-30: #5ef08a47;
  --color-tb36-on-30: oklch(0.84 0.2 148 / 0.28);
  --color-tb36-off: #1f2b24;
  --color-tb36-off: oklch(0.28 0.03 150);
  --font-tb36-sans: "Chakra Petch", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.tb-36 {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  background: radial-gradient(34rem 20rem at 50% 44%, #17201c, transparent 74%), var(--color-tb36-bg);
}

.tb-36__lens {
  background: radial-gradient(120% 140% at 50% 0%, rgba(255,255,255,.06), transparent 60%), var(--color-tb36-lens);
}
/* BAR GEOMETRY: 21 bars, two chamfer shapes, eight position rules. As utilities
   this would be 21 near-identical class lists differing by one edge. */

.tb-36__seg {
  position: absolute;
  display: block;
  border-radius: .06rem;
  background: var(--color-tb36-off);
  transition: background-color .09s linear, box-shadow .09s linear;
}

.tb-36__seg--a,
.tb-36__seg--d,
.tb-36__seg--g {
  left: 14%;
  width: 72%;
  height: .28rem;
  clip-path: polygon(.18rem 0, calc(100% - .18rem) 0, 100% 50%, calc(100% - .18rem) 100%, .18rem 100%, 0 50%);
}

.tb-36__seg--a {
  top: 0;
}

.tb-36__seg--g {
  top: calc(50% - .14rem);
}

.tb-36__seg--d {
  bottom: 0;
}

.tb-36__seg--b,
.tb-36__seg--c,
.tb-36__seg--e,
.tb-36__seg--f {
  width: .28rem;
  height: calc(50% - .34rem);
  clip-path: polygon(0 .18rem, 50% 0, 100% .18rem, 100% calc(100% - .18rem), 50% 100%, 0 calc(100% - .18rem));
}

.tb-36__seg--f {
  left: 0;
  top: .34rem;
}

.tb-36__seg--b {
  right: 0;
  top: .34rem;
}

.tb-36__seg--e {
  left: 0;
  bottom: .34rem;
}

.tb-36__seg--c {
  right: 0;
  bottom: .34rem;
}

.tb-36__seg[data-on="true"] {
  background: var(--color-tb36-on);
  box-shadow: 0 0 4px var(--color-tb36-on), 0 0 12px var(--color-tb36-on-60), 0 0 22px var(--color-tb36-on-30);
}

@media (prefers-reduced-motion: reduce) {
  .tb-36__seg {
    transition: none;
  }
}

@media (prefers-color-scheme: light) {
  .tb-36:not([data-theme="dark"]) {
    --color-tb36-bg: oklch(0.18 0.012 150);
  }
}

.tb-36[data-theme="light"] {
  --color-tb36-bg: oklch(0.18 0.012 150);
}

@media (forced-colors: active) {
  .tb-36__btn {
    background: ButtonFace;
    border: 1px solid ButtonText;
    box-shadow: none;
  }

  .tb-36__lens {
    background: Canvas;
    box-shadow: none;
  }

  .tb-36__seg {
    background: GrayText;
    box-shadow: none;
  }

  .tb-36__seg[data-on="true"] {
    background: Highlight;
    box-shadow: none;
  }
}
(() => {
  const btn = document.querySelector('.tb-36__btn');
  if (!btn) return;
  const MAP = { 0:'abcdef', 1:'bc', 2:'abdeg', 3:'abcdg', 4:'bcfg', 5:'acdfg', 6:'acdefg', 7:'abc', 8:'abcdefg', 9:'abcdfg' };
  const digits = [...btn.querySelectorAll('.tb-36__digit')];
  const live = btn.querySelector('.tb-36__live');
  let value = 0;
  const render = () => {
    const text = String(value % 1000).padStart(digits.length, '0');
    digits.forEach((d, i) => {
      const lit = MAP[text[i]] || '';
      d.querySelectorAll('.tb-36__seg').forEach((s) => { s.dataset.on = String(lit.includes(s.dataset.s)); });
    });
    live.textContent = String(value % 1000);
  };
  btn.addEventListener('click', () => { value += 1; render(); });
  render();
})();

Setup — do this once per project

Skip this if your project already runs Tailwind v4.

1Load Tailwind
<script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>

Compiles in the browser — perfect for a CodePen or a quick test, not for production.

2Add the stylesheetRequiredthe @theme block is what makes the custom utilities exist
@import "tailwindcss";

@theme {
  --color-tb36-bg: #0b0d0c;
  --color-tb36-bg: oklch(0.13 0.008 150);
  --color-tb36-panel: #1c211f;
  --color-tb36-panel: oklch(0.24 0.012 150);
  --color-tb36-panel-hi: #2c3331;
  --color-tb36-panel-hi: oklch(0.3 0.012 150);
  --color-tb36-edge: #0a0d0c;
  --color-tb36-edge: oklch(0.12 0.008 150);
  --color-tb36-lens: #0a0f0d;
  --color-tb36-lens: oklch(0.12 0.012 155);
  --color-tb36-on: #5ef08a;
  --color-tb36-on: oklch(0.84 0.2 148);
  --color-tb36-on-60: #5ef08a99;
  --color-tb36-on-60: oklch(0.84 0.2 148 / 0.55);
  --color-tb36-on-30: #5ef08a47;
  --color-tb36-on-30: oklch(0.84 0.2 148 / 0.28);
  --color-tb36-off: #1f2b24;
  --color-tb36-off: oklch(0.28 0.03 150);
  --font-tb36-sans: "Chakra Petch", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.tb-36 {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  background: radial-gradient(34rem 20rem at 50% 44%, #17201c, transparent 74%), var(--color-tb36-bg);
}

.tb-36__lens {
  background: radial-gradient(120% 140% at 50% 0%, rgba(255,255,255,.06), transparent 60%), var(--color-tb36-lens);
}
/* BAR GEOMETRY: 21 bars, two chamfer shapes, eight position rules. As utilities
   this would be 21 near-identical class lists differing by one edge. */

.tb-36__seg {
  position: absolute;
  display: block;
  border-radius: .06rem;
  background: var(--color-tb36-off);
  transition: background-color .09s linear, box-shadow .09s linear;
}

.tb-36__seg--a,
.tb-36__seg--d,
.tb-36__seg--g {
  left: 14%;
  width: 72%;
  height: .28rem;
  clip-path: polygon(.18rem 0, calc(100% - .18rem) 0, 100% 50%, calc(100% - .18rem) 100%, .18rem 100%, 0 50%);
}

.tb-36__seg--a {
  top: 0;
}

.tb-36__seg--g {
  top: calc(50% - .14rem);
}

.tb-36__seg--d {
  bottom: 0;
}

.tb-36__seg--b,
.tb-36__seg--c,
.tb-36__seg--e,
.tb-36__seg--f {
  width: .28rem;
  height: calc(50% - .34rem);
  clip-path: polygon(0 .18rem, 50% 0, 100% .18rem, 100% calc(100% - .18rem), 50% 100%, 0 calc(100% - .18rem));
}

.tb-36__seg--f {
  left: 0;
  top: .34rem;
}

.tb-36__seg--b {
  right: 0;
  top: .34rem;
}

.tb-36__seg--e {
  left: 0;
  bottom: .34rem;
}

.tb-36__seg--c {
  right: 0;
  bottom: .34rem;
}

.tb-36__seg[data-on="true"] {
  background: var(--color-tb36-on);
  box-shadow: 0 0 4px var(--color-tb36-on), 0 0 12px var(--color-tb36-on-60), 0 0 22px var(--color-tb36-on-30);
}

@media (prefers-reduced-motion: reduce) {
  .tb-36__seg {
    transition: none;
  }
}

@media (prefers-color-scheme: light) {
  .tb-36:not([data-theme="dark"]) {
    --color-tb36-bg: oklch(0.18 0.012 150);
  }
}

.tb-36[data-theme="light"] {
  --color-tb36-bg: oklch(0.18 0.012 150);
}

@media (forced-colors: active) {
  .tb-36__btn {
    background: ButtonFace;
    border: 1px solid ButtonText;
    box-shadow: none;
  }

  .tb-36__lens {
    background: Canvas;
    box-shadow: none;
  }

  .tb-36__seg {
    background: GrayText;
    box-shadow: none;
  }

  .tb-36__seg[data-on="true"] {
    background: Highlight;
    box-shadow: none;
  }
}
3Fonts used by this demooptional — skip if you have your own type stack
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@600;700&display=swap">

What changed in the port

Which parts became utilities, which stayed CSS, and why.

  • Utilities: the panel, the lens box, the digit cells, the press, focus, and the sr-only live region. CSS: all 21 bars — two chamfer polygons, eight position rules and the lit state.
  • This is the most CSS-heavy port in the collection, and correctly so. Seven segments × three digits is 21 elements whose only differences are edge, axis and offset. Utilities would mean 21 class lists of 90 characters each, differing in one token — which is not "styling in the markup", it is copy-paste with extra steps.
  • The one port change that is an improvement: data-on replaces classList.toggle('is-on'). It reads as state in devtools, and it pairs with data-[on=true]: variants if you later want to style a digit from its markup.
  • Three alpha tokens for the bloom (on, on-60, on-30) instead of inline color-mix(). Same trade as the neon button: slightly more tokens, dramatically more readable glow.
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 demo 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: Tailwind LED Segment Display Button
Source: https://codefronts.com/components/tailwind-css-buttons/tailwind-led-segment-display-button/

A machined instrument panel with a real seven-segment readout: every digit is seven CSS bars lit from a lookup table, glowing with a layered bloom against a smoked lens. Press it and the counter ticks up with correct segment-by-segment switching.
## HTML
```html
<div class="tb-36 w-full min-h-svh grid place-items-center font-tb36-sans p-[clamp(1.5rem,6vw,4rem)]">
  <button type="button" aria-label="Increment the counter" class="tb-36__btn relative cursor-pointer grid place-items-center p-3.5 border border-tb36-edge rounded-[0.8rem] bg-[linear-gradient(180deg,var(--color-tb36-panel-hi),var(--color-tb36-panel))] shadow-[inset_0_1px_0_#ffffff24,inset_0_-2px_4px_#00000080,0_14px_26px_-12px_#000000cc] transition-[translate,box-shadow] duration-[160ms] [-webkit-tap-highlight-color:transparent] hover:-translate-y-px active:translate-y-0.5 active:shadow-[inset_0_2px_8px_#000000b3] focus-visible:outline-2 focus-visible:outline-offset-4 focus-visible:outline-tb36-on motion-reduce:transition-none">
    <span aria-hidden="true" class="tb-36__lens flex gap-2 px-4 py-3 rounded-[0.45rem] shadow-[inset_0_2px_8px_#000000d9,inset_0_0_0_1px_#ffffff0d]">
      <span class="tb-36__digit relative block w-6.5 h-11.5"><i class="tb-36__seg tb-36__seg--a" data-s="a" data-on="false"></i><i class="tb-36__seg tb-36__seg--b" data-s="b" data-on="false"></i><i class="tb-36__seg tb-36__seg--c" data-s="c" data-on="false"></i><i class="tb-36__seg tb-36__seg--d" data-s="d" data-on="false"></i><i class="tb-36__seg tb-36__seg--e" data-s="e" data-on="false"></i><i class="tb-36__seg tb-36__seg--f" data-s="f" data-on="false"></i><i class="tb-36__seg tb-36__seg--g" data-s="g" data-on="false"></i></span>
      <span class="tb-36__digit relative block w-6.5 h-11.5"><i class="tb-36__seg tb-36__seg--a" data-s="a" data-on="false"></i><i class="tb-36__seg tb-36__seg--b" data-s="b" data-on="false"></i><i class="tb-36__seg tb-36__seg--c" data-s="c" data-on="false"></i><i class="tb-36__seg tb-36__seg--d" data-s="d" data-on="false"></i><i class="tb-36__seg tb-36__seg--e" data-s="e" data-on="false"></i><i class="tb-36__seg tb-36__seg--f" data-s="f" data-on="false"></i><i class="tb-36__seg tb-36__seg--g" data-s="g" data-on="false"></i></span>
      <span class="tb-36__digit relative block w-6.5 h-11.5"><i class="tb-36__seg tb-36__seg--a" data-s="a" data-on="false"></i><i class="tb-36__seg tb-36__seg--b" data-s="b" data-on="false"></i><i class="tb-36__seg tb-36__seg--c" data-s="c" data-on="false"></i><i class="tb-36__seg tb-36__seg--d" data-s="d" data-on="false"></i><i class="tb-36__seg tb-36__seg--e" data-s="e" data-on="false"></i><i class="tb-36__seg tb-36__seg--f" data-s="f" data-on="false"></i><i class="tb-36__seg tb-36__seg--g" data-s="g" data-on="false"></i></span>
    </span>
    <span role="status" aria-live="polite" class="tb-36__live sr-only">0</span>
  </button>
</div>
```
## CSS
```css
@import "tailwindcss";

@theme {
  --color-tb36-bg: #0b0d0c;
  --color-tb36-bg: oklch(0.13 0.008 150);
  --color-tb36-panel: #1c211f;
  --color-tb36-panel: oklch(0.24 0.012 150);
  --color-tb36-panel-hi: #2c3331;
  --color-tb36-panel-hi: oklch(0.3 0.012 150);
  --color-tb36-edge: #0a0d0c;
  --color-tb36-edge: oklch(0.12 0.008 150);
  --color-tb36-lens: #0a0f0d;
  --color-tb36-lens: oklch(0.12 0.012 155);
  --color-tb36-on: #5ef08a;
  --color-tb36-on: oklch(0.84 0.2 148);
  --color-tb36-on-60: #5ef08a99;
  --color-tb36-on-60: oklch(0.84 0.2 148 / 0.55);
  --color-tb36-on-30: #5ef08a47;
  --color-tb36-on-30: oklch(0.84 0.2 148 / 0.28);
  --color-tb36-off: #1f2b24;
  --color-tb36-off: oklch(0.28 0.03 150);
  --font-tb36-sans: "Chakra Petch", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.tb-36 {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  background: radial-gradient(34rem 20rem at 50% 44%, #17201c, transparent 74%), var(--color-tb36-bg);
}

.tb-36__lens {
  background: radial-gradient(120% 140% at 50% 0%, rgba(255,255,255,.06), transparent 60%), var(--color-tb36-lens);
}
/* BAR GEOMETRY: 21 bars, two chamfer shapes, eight position rules. As utilities
   this would be 21 near-identical class lists differing by one edge. */

.tb-36__seg {
  position: absolute;
  display: block;
  border-radius: .06rem;
  background: var(--color-tb36-off);
  transition: background-color .09s linear, box-shadow .09s linear;
}

.tb-36__seg--a,
.tb-36__seg--d,
.tb-36__seg--g {
  left: 14%;
  width: 72%;
  height: .28rem;
  clip-path: polygon(.18rem 0, calc(100% - .18rem) 0, 100% 50%, calc(100% - .18rem) 100%, .18rem 100%, 0 50%);
}

.tb-36__seg--a {
  top: 0;
}

.tb-36__seg--g {
  top: calc(50% - .14rem);
}

.tb-36__seg--d {
  bottom: 0;
}

.tb-36__seg--b,
.tb-36__seg--c,
.tb-36__seg--e,
.tb-36__seg--f {
  width: .28rem;
  height: calc(50% - .34rem);
  clip-path: polygon(0 .18rem, 50% 0, 100% .18rem, 100% calc(100% - .18rem), 50% 100%, 0 calc(100% - .18rem));
}

.tb-36__seg--f {
  left: 0;
  top: .34rem;
}

.tb-36__seg--b {
  right: 0;
  top: .34rem;
}

.tb-36__seg--e {
  left: 0;
  bottom: .34rem;
}

.tb-36__seg--c {
  right: 0;
  bottom: .34rem;
}

.tb-36__seg[data-on="true"] {
  background: var(--color-tb36-on);
  box-shadow: 0 0 4px var(--color-tb36-on), 0 0 12px var(--color-tb36-on-60), 0 0 22px var(--color-tb36-on-30);
}

@media (prefers-reduced-motion: reduce) {
  .tb-36__seg {
    transition: none;
  }
}

@media (prefers-color-scheme: light) {
  .tb-36:not([data-theme="dark"]) {
    --color-tb36-bg: oklch(0.18 0.012 150);
  }
}

.tb-36[data-theme="light"] {
  --color-tb36-bg: oklch(0.18 0.012 150);
}

@media (forced-colors: active) {
  .tb-36__btn {
    background: ButtonFace;
    border: 1px solid ButtonText;
    box-shadow: none;
  }

  .tb-36__lens {
    background: Canvas;
    box-shadow: none;
  }

  .tb-36__seg {
    background: GrayText;
    box-shadow: none;
  }

  .tb-36__seg[data-on="true"] {
    background: Highlight;
    box-shadow: none;
  }
}
```

## JavaScript
```js
(() => {
  const btn = document.querySelector('.tb-36__btn');
  if (!btn) return;
  const MAP = { 0:'abcdef', 1:'bc', 2:'abdeg', 3:'abcdg', 4:'bcfg', 5:'acdfg', 6:'acdefg', 7:'abc', 8:'abcdefg', 9:'abcdfg' };
  const digits = [...btn.querySelectorAll('.tb-36__digit')];
  const live = btn.querySelector('.tb-36__live');
  let value = 0;
  const render = () => {
    const text = String(value % 1000).padStart(digits.length, '0');
    digits.forEach((d, i) => {
      const lit = MAP[text[i]] || '';
      d.querySelectorAll('.tb-36__seg').forEach((s) => { s.dataset.on = String(lit.includes(s.dataset.s)); });
    });
    live.textContent = String(value % 1000);
  };
  btn.addEventListener('click', () => { value += 1; render(); });
  render();
})();
```

How this works

The lookup table is the whole controller. Seven segments per digit, a bitmask string per numeral, and one attribute toggle:

const MAP = { 0:'abcdef', 1:'bc', 2:'abdeg', 3:'abcdg', 4:'bcfg',
              5:'acdfg', 6:'acdefg', 7:'abc', 8:'abcdefg', 9:'abcdfg' };
segs.forEach(s => s.dataset.on = String(lit.includes(s.dataset.s)));

The port swaps the CSS version's classList.toggle('is-on') for a data-on attribute, which reads better in devtools and pairs with data-[on=true]: variants.

Unlit segments stay faintly visible. That is what makes it look like LEDs behind a lens rather than text appearing from nowhere — the off colour is a real token, not transparent.

The bar geometry stays CSS. Twenty-one bars share two chamfer polygons and eight position rules; as utilities that would be twenty-one near-identical class lists differing by one edge.

Make it yours

  • --color-tb36-on is the LED: red for vintage, amber for avionics, green for lab gear.
  • Add digits by copying a digit block — the JS pads automatically.
  • Slow the switch to 120ms for a lazier, older display.
  • Bright lens instead of smoked: raise the panel lightness and lower the bloom's third layer.
  • The unlit token at 6–10% of the lit one is the sweet spot.

Gotchas — read before shipping

  • A glowing readout is not accessible text. The live region does the real work.
  • Segment displays render digits and a handful of letters. Never arbitrary copy.
  • Unlit segments must stay visible or the numbers teleport.
  • Glow via box-shadow on 21 elements is fine; blur-* on each would not be.
  • Keep the button's hit area large — the digits are decoration inside it.

Browser support

ChromeSafariFirefoxEdge
111+16.4+128+111+

clip-path, shadow glow and data-attribute variants are baseline below Tailwind v4's own floor.

Techniques used in this demo

Utilitiesfirst-class utility or variant

box-shadowtw ↗

Arbitraryneeds bracket syntax

clip-pathtw ↗

HTML & JSno Tailwind involved

aria liveMDN ↗

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