20 Tailwind CSS Kbd Keys
09 / 20

All 20 in 20 Tailwind CSS Kbd Keys

  1. 01Tailwind CSS Kbd Tag Styling for Inline Keyboard Keys
  2. 02Tailwind 3D Keycap Button with Press-Down Effect
  3. 03Tailwind Keyboard Shortcut Combo with Plus Separators
  4. 04Flat Minimalist Tailwind Kbd Key for Body Text
  5. 05Responsive Tailwind Kbd Sizing with Em Units
  6. 06Tailwind Mac Cmd vs Windows Ctrl Shortcut Toggle
  7. 07Tailwind Arrow Keys and Navigation Key Layout
  8. 08Auto-Detect OS Keyboard Shortcuts (Cmd or Ctrl) in Tailwind
  9. 09Tailwind Keyboard Layout with Function Keys and Space Bar
  10. 10Tailwind Icon Keycaps with Inline SVG
  11. 11Tailwind Search Input with Cmd+K Shortcut Hint
  12. 12Tailwind Keyboard Shortcuts Cheat Sheet Grid
  13. 13Tailwind Tooltip with Keyboard Shortcut Hint
  14. 14Tailwind Keyboard Shortcut Settings Table
  15. 15Live Key Press Visualizer with Tailwind CSS
  16. 16Neumorphic Keycap Design in Tailwind CSS
  17. 17Glassmorphism Keyboard Keys in Tailwind CSS
  18. 18Retro Typewriter Round Keys in Tailwind CSS
  19. 19Terminal-Style Monospace Kbd Keys in Tailwind
  20. 20Dark Mode Kbd Keys with Tailwind CSS Variables
Pure TailwindMIT licensed

Tailwind Keyboard Layout with Function Keys and Space Bar

A real keyboard's geometry in utilities: one unit [--u:clamp(26px,7vw,46px)] and per-key multipliers — w-[calc(var(--u)*2.25)] for Shift, *6.25 for Space — so proportions match a physical board at every size. The function row is grouped Esc · F1–F4 · F5–F8 · F9–F12 like the hardware, and wraps by group on phones.

Live Demo
Plain CSSTailwind v4
Try it

Untitled UI Pro: 5,000+ React + Tailwind CSS v4 components · from $349 one-time

Untitled UI React · Affiliate link

Get Untitled UI Pro

The code

<section class="kbd-09 relative w-full min-h-svh scheme-light kbd09-dark:scheme-dark bg-kbd09-bg text-kbd09-ink font-kbd09-sans" aria-label="Function keys and wide space bar demo">
  <div class="grid min-h-svh place-items-center px-5 pt-20 pb-12">
      <section class="w-full min-w-0 max-w-[48rem] rounded-[22px] border border-kbd09-rule bg-kbd09-board p-[clamp(14px,3vw,26px)] shadow-[inset_0_1px_0_var(--color-kbd09-shine),0_24px_48px_-24px_var(--color-kbd09-shade)] [--u:clamp(26px,7vw,46px)]">
        <p class="mb-3 font-kbd09-mono text-[10.5px] font-semibold uppercase tracking-[0.2em] text-kbd09-mut">Function row · 1u each · grouped like the hardware</p>
        <div class="flex flex-wrap gap-x-[calc(var(--u)*0.5)] gap-y-1.5">
          <div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-accrim bg-kbd09-acc text-kbd09-accink shadow-[inset_0_-3px_0_var(--color-kbd09-acclip),0_2px_0_var(--color-kbd09-edge)] w-(--u) place-items-center">Esc</kbd></div><div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F1</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F2</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F3</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F4</kbd></div><div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F5</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F6</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F7</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F8</kbd></div><div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F9</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F10</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F11</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F12</kbd></div>
        </div>
        <p class="mt-6 mb-3 font-kbd09-mono text-[10.5px] font-semibold uppercase tracking-[0.2em] text-kbd09-mut">Wide caps · width = unit × multiplier</p>
        <div class="grid gap-1.5">
          <div class="flex flex-wrap gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.5)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Tab</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*2)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Backspace</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*2.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Shift</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-accrim bg-kbd09-acc text-kbd09-accink shadow-[inset_0_-3px_0_var(--color-kbd09-acclip),0_2px_0_var(--color-kbd09-edge)] w-[calc(var(--u)*1.75)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Enter</kbd></div>
          <div class="flex flex-wrap gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Ctrl</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Alt</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*6.25)] place-items-center"><span class="sr-only">Space</span></kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Alt</kbd></div>
        </div>
        <dl class="mt-6 grid gap-x-6 gap-y-1.5 border-t border-kbd09-rule pt-4 sm:grid-cols-2">
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">1u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">letter, digit, function key</dd></div>
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">1.5u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">Tab</dd></div>
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">2.25u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">left Shift</dd></div>
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">6.25u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">Space bar</dd></div>
        </dl>
      </section>
  </div>
  <div class="absolute top-3.5 right-4 z-10">
    <input id="kbd-09-theme" type="checkbox" class="peer sr-only">
    <label for="kbd-09-theme" class="inline-flex min-h-11 cursor-pointer select-none items-center gap-2.5 rounded-full border border-current/55 px-4 font-sans text-[11px] font-bold uppercase leading-none tracking-[0.16em] text-kbd09-ink transition-colors hover:border-current peer-focus-visible:outline-3 peer-focus-visible:outline-offset-2 peer-focus-visible:outline-kbd09-acc">
      <span aria-hidden="true" class="size-3 flex-none rounded-full bg-current transition-[background-color,box-shadow] duration-300 kbd09-dark:bg-transparent kbd09-dark:shadow-[inset_-4px_-2px_0_0_currentColor] motion-reduce:transition-none"></span>
      <span class="kbd09-dark:hidden">Light</span><span class="hidden kbd09-dark:inline">Dark</span><span class="sr-only"> theme</span>
    </label>
  </div>
</section>
@import "tailwindcss";
/* Theme state: follows the OS; the corner switch flips it for THIS demo only. */

@custom-variant kbd09-dark {
  @media (prefers-color-scheme: dark) {
    &:where(.kbd-09:not(:has(#kbd-09-theme:checked)), .kbd-09:not(:has(#kbd-09-theme:checked)) *) {
      @slot;
    }
  }

  @media (prefers-color-scheme: light) {
    &:where(.kbd-09:has(#kbd-09-theme:checked), .kbd-09:has(#kbd-09-theme:checked) *) {
      @slot;
    }
  }
}
/* Every colour is light-dark(day, night): the root's scheme-light / scheme-dark utility picks the side. */

@theme {
  --color-kbd09-bg: light-dark(#e4e0d6, #0b0c0e);
  --color-kbd09-bg: light-dark(oklch(0.907 0.014 88.7), oklch(0.154 0.005 264.4));
  --color-kbd09-board: light-dark(#d3cec2, #17181b);
  --color-kbd09-board: light-dark(oklch(0.852 0.017 88), oklch(0.209 0.006 271.1));
  --color-kbd09-shine: light-dark(#f2efe8, #2a2c31);
  --color-kbd09-shine: light-dark(oklch(0.953 0.01 87.5), oklch(0.293 0.01 268.3));
  --color-kbd09-shade: light-dark(#3b33264d, #000000b3);
  --color-kbd09-shade: light-dark(oklch(0.326 0.025 79.7 / 0.3), oklch(0 0 0 / 0.7));
  --color-kbd09-ink: light-dark(#211e18, #e9eaec);
  --color-kbd09-ink: light-dark(oklch(0.236 0.012 84.6), oklch(0.937 0.003 264.5));
  --color-kbd09-mut: light-dark(#59534a, #9a9ea6);
  --color-kbd09-mut: light-dark(oklch(0.445 0.016 78.1), oklch(0.699 0.013 264.5));
  --color-kbd09-rule: light-dark(#bfb8aa, #2a2c31);
  --color-kbd09-rule: light-dark(oklch(0.784 0.021 84.6), oklch(0.293 0.01 268.3));
  --color-kbd09-cap: light-dark(#f4f1ea, #26282d);
  --color-kbd09-cap: light-dark(oklch(0.959 0.01 87.5), oklch(0.277 0.01 268.3));
  --color-kbd09-rim: light-dark(#b9b2a3, #3a3d44);
  --color-kbd09-rim: light-dark(oklch(0.765 0.022 86), oklch(0.36 0.013 267.2));
  --color-kbd09-lip: light-dark(#d9d3c6, #1c1e22);
  --color-kbd09-lip: light-dark(oklch(0.868 0.019 86.2), oklch(0.235 0.008 264.4));
  --color-kbd09-edge: light-dark(#9c9483, #050506);
  --color-kbd09-edge: light-dark(oklch(0.669 0.026 85.8), oklch(0.116 0.003 285.9));
  --color-kbd09-capink: light-dark(#2a2620, #e6e8eb);
  --color-kbd09-capink: light-dark(oklch(0.271 0.012 78.1), oklch(0.93 0.005 258.3));
  --color-kbd09-acc: light-dark(#e0612b, #ef7a3f);
  --color-kbd09-acc: light-dark(oklch(0.644 0.172 41.3), oklch(0.704 0.161 45.3));
  --color-kbd09-accrim: light-dark(#b44a1e, #b9551f);
  --color-kbd09-accrim: light-dark(oklch(0.543 0.149 40.7), oklch(0.567 0.144 45.2));
  --color-kbd09-acclip: light-dark(#bc4f20, #c45a22);
  --color-kbd09-acclip: light-dark(oklch(0.563 0.152 41.3), oklch(0.591 0.151 44.8));
  --color-kbd09-accink: light-dark(#ffffff, #ffffff);
  --color-kbd09-accink: light-dark(oklch(1 0 0), oklch(1 0 0));
  --font-kbd09-sans: 'Chakra Petch', system-ui, sans-serif;
  --font-kbd09-mono: 'JetBrains Mono', ui-monospace, monospace;
}
/* Root rule: the full-bleed contract, stated in CSS as well as utilities so the stage is sized before the browser build compiles. */

.kbd-09 {
  width: 100%;
  min-height: 100svh;
  position: relative;
}

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 state: follows the OS; the corner switch flips it for THIS demo only. */

@custom-variant kbd09-dark {
  @media (prefers-color-scheme: dark) {
    &:where(.kbd-09:not(:has(#kbd-09-theme:checked)), .kbd-09:not(:has(#kbd-09-theme:checked)) *) {
      @slot;
    }
  }

  @media (prefers-color-scheme: light) {
    &:where(.kbd-09:has(#kbd-09-theme:checked), .kbd-09:has(#kbd-09-theme:checked) *) {
      @slot;
    }
  }
}
/* Every colour is light-dark(day, night): the root's scheme-light / scheme-dark utility picks the side. */

@theme {
  --color-kbd09-bg: light-dark(#e4e0d6, #0b0c0e);
  --color-kbd09-bg: light-dark(oklch(0.907 0.014 88.7), oklch(0.154 0.005 264.4));
  --color-kbd09-board: light-dark(#d3cec2, #17181b);
  --color-kbd09-board: light-dark(oklch(0.852 0.017 88), oklch(0.209 0.006 271.1));
  --color-kbd09-shine: light-dark(#f2efe8, #2a2c31);
  --color-kbd09-shine: light-dark(oklch(0.953 0.01 87.5), oklch(0.293 0.01 268.3));
  --color-kbd09-shade: light-dark(#3b33264d, #000000b3);
  --color-kbd09-shade: light-dark(oklch(0.326 0.025 79.7 / 0.3), oklch(0 0 0 / 0.7));
  --color-kbd09-ink: light-dark(#211e18, #e9eaec);
  --color-kbd09-ink: light-dark(oklch(0.236 0.012 84.6), oklch(0.937 0.003 264.5));
  --color-kbd09-mut: light-dark(#59534a, #9a9ea6);
  --color-kbd09-mut: light-dark(oklch(0.445 0.016 78.1), oklch(0.699 0.013 264.5));
  --color-kbd09-rule: light-dark(#bfb8aa, #2a2c31);
  --color-kbd09-rule: light-dark(oklch(0.784 0.021 84.6), oklch(0.293 0.01 268.3));
  --color-kbd09-cap: light-dark(#f4f1ea, #26282d);
  --color-kbd09-cap: light-dark(oklch(0.959 0.01 87.5), oklch(0.277 0.01 268.3));
  --color-kbd09-rim: light-dark(#b9b2a3, #3a3d44);
  --color-kbd09-rim: light-dark(oklch(0.765 0.022 86), oklch(0.36 0.013 267.2));
  --color-kbd09-lip: light-dark(#d9d3c6, #1c1e22);
  --color-kbd09-lip: light-dark(oklch(0.868 0.019 86.2), oklch(0.235 0.008 264.4));
  --color-kbd09-edge: light-dark(#9c9483, #050506);
  --color-kbd09-edge: light-dark(oklch(0.669 0.026 85.8), oklch(0.116 0.003 285.9));
  --color-kbd09-capink: light-dark(#2a2620, #e6e8eb);
  --color-kbd09-capink: light-dark(oklch(0.271 0.012 78.1), oklch(0.93 0.005 258.3));
  --color-kbd09-acc: light-dark(#e0612b, #ef7a3f);
  --color-kbd09-acc: light-dark(oklch(0.644 0.172 41.3), oklch(0.704 0.161 45.3));
  --color-kbd09-accrim: light-dark(#b44a1e, #b9551f);
  --color-kbd09-accrim: light-dark(oklch(0.543 0.149 40.7), oklch(0.567 0.144 45.2));
  --color-kbd09-acclip: light-dark(#bc4f20, #c45a22);
  --color-kbd09-acclip: light-dark(oklch(0.563 0.152 41.3), oklch(0.591 0.151 44.8));
  --color-kbd09-accink: light-dark(#ffffff, #ffffff);
  --color-kbd09-accink: light-dark(oklch(1 0 0), oklch(1 0 0));
  --font-kbd09-sans: 'Chakra Petch', system-ui, sans-serif;
  --font-kbd09-mono: 'JetBrains Mono', ui-monospace, monospace;
}
/* Root rule: the full-bleed contract, stated in CSS as well as utilities so the stage is sized before the browser build compiles. */

.kbd-09 {
  width: 100%;
  min-height: 100svh;
  position: relative;
}
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@500;600;700&family=JetBrains+Mono:wght@500;600&display=swap">

What changed in the port

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

  • The CSS original's inline style="--w: 2.25" per key became w-[calc(var(--u)*2.25)] — the multiplier lives in the class list, no per-element style attribute.
  • .kbd-09__key--space became the same utility with *6.25; the modifier class is gone.
  • UI upgrade: the function row is now grouped Esc · F1–F4 · F5–F8 · F9–F12 like real hardware and wraps by group, so clusters never break mid-row on phones.
  • UI upgrade: sculpted cap lips, bottom-left legends on wide keys, accent Esc/Enter caps and a hardware-style Chakra Petch label face.
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 Keyboard Layout with Function Keys and Space Bar
Source: https://codefronts.com/snippets/tailwind-css-kbd-keys/tailwind-keyboard-layout-function-keys-space-bar/

A real keyboard's geometry in utilities: one unit [--u:clamp(26px,7vw,46px)] and per-key multipliers — w-[calc(var(--u)*2.25)] for Shift, *6.25 for Space — so proportions match a physical board at every size. The function row is grouped Esc · F1–F4 · F5–F8 · F9–F12 like the hardware, and wraps by group on phones.
## HTML
```html
<section class="kbd-09 relative w-full min-h-svh scheme-light kbd09-dark:scheme-dark bg-kbd09-bg text-kbd09-ink font-kbd09-sans" aria-label="Function keys and wide space bar demo">
  <div class="grid min-h-svh place-items-center px-5 pt-20 pb-12">
      <section class="w-full min-w-0 max-w-[48rem] rounded-[22px] border border-kbd09-rule bg-kbd09-board p-[clamp(14px,3vw,26px)] shadow-[inset_0_1px_0_var(--color-kbd09-shine),0_24px_48px_-24px_var(--color-kbd09-shade)] [--u:clamp(26px,7vw,46px)]">
        <p class="mb-3 font-kbd09-mono text-[10.5px] font-semibold uppercase tracking-[0.2em] text-kbd09-mut">Function row · 1u each · grouped like the hardware</p>
        <div class="flex flex-wrap gap-x-[calc(var(--u)*0.5)] gap-y-1.5">
          <div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-accrim bg-kbd09-acc text-kbd09-accink shadow-[inset_0_-3px_0_var(--color-kbd09-acclip),0_2px_0_var(--color-kbd09-edge)] w-(--u) place-items-center">Esc</kbd></div><div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F1</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F2</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F3</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F4</kbd></div><div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F5</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F6</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F7</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F8</kbd></div><div class="flex gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F9</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F10</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F11</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-(--u) place-items-center">F12</kbd></div>
        </div>
        <p class="mt-6 mb-3 font-kbd09-mono text-[10.5px] font-semibold uppercase tracking-[0.2em] text-kbd09-mut">Wide caps · width = unit × multiplier</p>
        <div class="grid gap-1.5">
          <div class="flex flex-wrap gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.5)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Tab</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*2)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Backspace</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*2.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Shift</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-accrim bg-kbd09-acc text-kbd09-accink shadow-[inset_0_-3px_0_var(--color-kbd09-acclip),0_2px_0_var(--color-kbd09-edge)] w-[calc(var(--u)*1.75)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Enter</kbd></div>
          <div class="flex flex-wrap gap-1"><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Ctrl</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Alt</kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*6.25)] place-items-center"><span class="sr-only">Space</span></kbd><kbd class="grid h-(--u) min-w-0 rounded-[calc(var(--u)*0.18)] border px-[calc(var(--u)*0.16)] font-kbd09-sans text-[clamp(9.5px,calc(var(--u)*0.27),12.5px)] font-semibold leading-none shadow-[inset_0_-3px_0_var(--color-kbd09-lip),0_2px_0_var(--color-kbd09-edge)] border-kbd09-rim bg-kbd09-cap text-kbd09-capink w-[calc(var(--u)*1.25)] items-end justify-items-start pb-[calc(var(--u)*0.2)]">Alt</kbd></div>
        </div>
        <dl class="mt-6 grid gap-x-6 gap-y-1.5 border-t border-kbd09-rule pt-4 sm:grid-cols-2">
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">1u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">letter, digit, function key</dd></div>
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">1.5u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">Tab</dd></div>
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">2.25u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">left Shift</dd></div>
          <div class="flex items-baseline gap-2.5"><dt class="w-12 flex-none font-kbd09-mono text-[12px] font-semibold text-kbd09-acc">6.25u</dt><dd class="min-w-0 text-[13px] text-kbd09-mut">Space bar</dd></div>
        </dl>
      </section>
  </div>
  <div class="absolute top-3.5 right-4 z-10">
    <input id="kbd-09-theme" type="checkbox" class="peer sr-only">
    <label for="kbd-09-theme" class="inline-flex min-h-11 cursor-pointer select-none items-center gap-2.5 rounded-full border border-current/55 px-4 font-sans text-[11px] font-bold uppercase leading-none tracking-[0.16em] text-kbd09-ink transition-colors hover:border-current peer-focus-visible:outline-3 peer-focus-visible:outline-offset-2 peer-focus-visible:outline-kbd09-acc">
      <span aria-hidden="true" class="size-3 flex-none rounded-full bg-current transition-[background-color,box-shadow] duration-300 kbd09-dark:bg-transparent kbd09-dark:shadow-[inset_-4px_-2px_0_0_currentColor] motion-reduce:transition-none"></span>
      <span class="kbd09-dark:hidden">Light</span><span class="hidden kbd09-dark:inline">Dark</span><span class="sr-only"> theme</span>
    </label>
  </div>
</section>
```
## CSS
```css
@import "tailwindcss";
/* Theme state: follows the OS; the corner switch flips it for THIS demo only. */

@custom-variant kbd09-dark {
  @media (prefers-color-scheme: dark) {
    &:where(.kbd-09:not(:has(#kbd-09-theme:checked)), .kbd-09:not(:has(#kbd-09-theme:checked)) *) {
      @slot;
    }
  }

  @media (prefers-color-scheme: light) {
    &:where(.kbd-09:has(#kbd-09-theme:checked), .kbd-09:has(#kbd-09-theme:checked) *) {
      @slot;
    }
  }
}
/* Every colour is light-dark(day, night): the root's scheme-light / scheme-dark utility picks the side. */

@theme {
  --color-kbd09-bg: light-dark(#e4e0d6, #0b0c0e);
  --color-kbd09-bg: light-dark(oklch(0.907 0.014 88.7), oklch(0.154 0.005 264.4));
  --color-kbd09-board: light-dark(#d3cec2, #17181b);
  --color-kbd09-board: light-dark(oklch(0.852 0.017 88), oklch(0.209 0.006 271.1));
  --color-kbd09-shine: light-dark(#f2efe8, #2a2c31);
  --color-kbd09-shine: light-dark(oklch(0.953 0.01 87.5), oklch(0.293 0.01 268.3));
  --color-kbd09-shade: light-dark(#3b33264d, #000000b3);
  --color-kbd09-shade: light-dark(oklch(0.326 0.025 79.7 / 0.3), oklch(0 0 0 / 0.7));
  --color-kbd09-ink: light-dark(#211e18, #e9eaec);
  --color-kbd09-ink: light-dark(oklch(0.236 0.012 84.6), oklch(0.937 0.003 264.5));
  --color-kbd09-mut: light-dark(#59534a, #9a9ea6);
  --color-kbd09-mut: light-dark(oklch(0.445 0.016 78.1), oklch(0.699 0.013 264.5));
  --color-kbd09-rule: light-dark(#bfb8aa, #2a2c31);
  --color-kbd09-rule: light-dark(oklch(0.784 0.021 84.6), oklch(0.293 0.01 268.3));
  --color-kbd09-cap: light-dark(#f4f1ea, #26282d);
  --color-kbd09-cap: light-dark(oklch(0.959 0.01 87.5), oklch(0.277 0.01 268.3));
  --color-kbd09-rim: light-dark(#b9b2a3, #3a3d44);
  --color-kbd09-rim: light-dark(oklch(0.765 0.022 86), oklch(0.36 0.013 267.2));
  --color-kbd09-lip: light-dark(#d9d3c6, #1c1e22);
  --color-kbd09-lip: light-dark(oklch(0.868 0.019 86.2), oklch(0.235 0.008 264.4));
  --color-kbd09-edge: light-dark(#9c9483, #050506);
  --color-kbd09-edge: light-dark(oklch(0.669 0.026 85.8), oklch(0.116 0.003 285.9));
  --color-kbd09-capink: light-dark(#2a2620, #e6e8eb);
  --color-kbd09-capink: light-dark(oklch(0.271 0.012 78.1), oklch(0.93 0.005 258.3));
  --color-kbd09-acc: light-dark(#e0612b, #ef7a3f);
  --color-kbd09-acc: light-dark(oklch(0.644 0.172 41.3), oklch(0.704 0.161 45.3));
  --color-kbd09-accrim: light-dark(#b44a1e, #b9551f);
  --color-kbd09-accrim: light-dark(oklch(0.543 0.149 40.7), oklch(0.567 0.144 45.2));
  --color-kbd09-acclip: light-dark(#bc4f20, #c45a22);
  --color-kbd09-acclip: light-dark(oklch(0.563 0.152 41.3), oklch(0.591 0.151 44.8));
  --color-kbd09-accink: light-dark(#ffffff, #ffffff);
  --color-kbd09-accink: light-dark(oklch(1 0 0), oklch(1 0 0));
  --font-kbd09-sans: 'Chakra Petch', system-ui, sans-serif;
  --font-kbd09-mono: 'JetBrains Mono', ui-monospace, monospace;
}
/* Root rule: the full-bleed contract, stated in CSS as well as utilities so the stage is sized before the browser build compiles. */

.kbd-09 {
  width: 100%;
  min-height: 100svh;
  position: relative;
}
```

How this works

Width is unit times multiplier. Keyboard makers measure in u: a letter is 1u, Tab 1.5u, left Shift 2.25u, Space 6.25u. One custom property on the board, one calc() per key:

<section class="[--u:clamp(26px,7vw,46px)]">
  <kbd class="h-(--u) w-[calc(var(--u)*6.25)]">Space</kbd>

Grouping is responsive. The function row is four flex groups inside a wrapping flex row, so on a phone whole clusters move to the next line — F5 never strands next to F12.

Make it yours

  • Tighter boards: lower the clamp ceiling to 40px.
  • ISO Enter or split Space: add another multiplier — the system has no fixed list.
  • Accent keys: swap KC for the accent class list (Esc and Enter here).

Gotchas — read before shipping

  • Gaps are not part of the multiplier, so very wide keys run a few pixels short of physical spacing — add + 4px per spanned gap if you need exact alignment.
  • h-(--u) is v4 shorthand; write h-[var(--u)] in v3.
  • Do not set --u in vw alone — the clamp keeps phones legible and desktops sane.

Browser support

ChromeSafariFirefoxEdge
123+17.5+128+123+

Tailwind v4's own sheet needs Chrome 111 / Safari 16.4 / Firefox 128 (cascade layers, @property, color-mix()); the light-dark() theme tokens raise the floor to Chrome 123 / Safari 17.5.

Techniques used in this demo

Utilitiesfirst-class utility or variant

flexboxtw ↗box-shadowtw ↗

Theme tokensset in @theme, used by a utility

custom propertiestw ↗

Arbitraryneeds bracket syntax

calctw ↗clamp()tw ↗

Search CodeFronts

Loading…

↑↓ navigate↵ selectesc closeOpen full search page →