20 Tailwind CSS Claymorphism
16 / 20

All 20 in 20 Tailwind CSS Claymorphism

  1. 01Tailwind CSS Claymorphism Box Shadow Recipe (3-Layer Formula)
  2. 02Tailwind Inner Shadow & Inset Highlight for Clay UI
  3. 03Tailwind Border Radius Scale & Squircle Corners for Puffy Shapes
  4. 04Claymorphism vs Neumorphism in Tailwind CSS (Side-by-Side)
  5. 05Tailwind Glassmorphism + Claymorphism Hybrid Card
  6. 06Tailwind Clay UI Light Source & Shadow Direction System
  7. 07Tailwind Elevation Shadow Scale: Clay Depth Tiers
  8. 08Tailwind CSS v4 Claymorphism: @theme Tokens, @utility & Arbitrary Values
  9. 09Tailwind 3D Clay Button with Press & Squish Animation
  10. 10Tailwind Toggle Switch, Checkbox & Segmented Control (Clay Style)
  11. 11Tailwind Search Bar & Floating Label Input (Clay Inset Style)
  12. 12Tailwind Badge & Pill Tag Components (Clay Style)
  13. 13Tailwind Claymorphism Card Component (Container Query Responsive)
  14. 14Tailwind Modal Dialog with Popover API (Clay Floating Depth)
  15. 15Tailwind Pricing Table with Monthly/Yearly Toggle (Clay Style)
  16. 16Tailwind Mobile Bottom Navigation Bar (Clay Tab Bar)
  17. 17Tailwind App Icon Grid with 3D Hover Tilt (Clay Tiles)
  18. 18Tailwind Toast Notification & Alert Components (Clay Style)
  19. 19Tailwind Dark Mode Claymorphism: Shadow Recalibration with light-dark()
  20. 20Tailwind Animation Performance: GPU Transform vs Box-Shadow (Live FPS Meter)
Pure TailwindMIT licensed

Tailwind Mobile Bottom Navigation Bar (Clay Tab Bar)

A floating clay dock with five destinations, a sliding puffy indicator and the two things production tab bars must get right: pb-[calc(12px+env(safe-area-inset-bottom))] to clear the iPhone home bar, and 56px targets. The pill reads the checked radio through group-has-[#tcl-16-t3:checked]/bar:translate-x-[200%]. New: the screen title follows the active tab, and the incorrect role="tablist" is gone.

Live Demo
Plain CSSTailwind v4
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The code

<section class="tcl-16 w-full min-h-svh grid place-items-center bg-tcl16-bg bg-[radial-gradient(80%_60%_at_50%_0%,var(--color-tcl16-glow),transparent_66%)] px-4 py-12 font-tcl16-sans text-tcl16-ink" aria-label="Clay bottom tab bar for mobile demo">
  <div class="grid w-full justify-items-center gap-5">
    <div class="group/phone w-[min(94vw,372px)] rounded-[56px] bg-tcl16-phone p-3.5 shadow-tcl16-phone">
      <div class="relative grid h-[min(70svh,580px)] grid-rows-[auto_1fr_auto] gap-3.5 overflow-hidden rounded-[44px] bg-tcl16-screen px-4 pt-4.5 shadow-tcl16-screen">
        <header class="flex items-center justify-between px-1.5 py-0.5">
          <h3 class="font-tcl16-display text-[22px] font-semibold tracking-[-0.01em]"><span class="hidden group-has-[#tcl-16-t1:checked]/phone:inline">Home</span><span class="hidden group-has-[#tcl-16-t2:checked]/phone:inline">Library</span><span class="hidden group-has-[#tcl-16-t3:checked]/phone:inline">Streaks</span><span class="hidden group-has-[#tcl-16-t4:checked]/phone:inline">Profile</span><span class="hidden group-has-[#tcl-16-t5:checked]/phone:inline">More</span></h3>
          <span aria-hidden="true" class="size-9.5 rounded-full bg-[oklch(0.84_0.1_340)] shadow-tcl16-av"></span>
        </header>
        <div aria-hidden="true" class="grid content-start gap-2.5 overflow-hidden">
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.84_0.1_30)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.84_0.09_190)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.85_0.1_290)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.86_0.1_145)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
        </div>
        <nav aria-label="Main" class="sticky bottom-0 pb-[calc(12px+env(safe-area-inset-bottom,0px))]">
          <div class="group/bar relative grid grid-cols-5 rounded-[32px] bg-tcl16-clay p-2 shadow-tcl16-dock">
            <span aria-hidden="true" class="absolute top-2 left-2 h-[calc(100%-16px)] w-[calc((100%-16px)/5)] rounded-3xl bg-tcl16-accent shadow-tcl16-pill transition-[translate] duration-[360ms] ease-[cubic-bezier(.34,1.45,.5,1)] group-has-[#tcl-16-t2:checked]/bar:translate-x-full group-has-[#tcl-16-t3:checked]/bar:translate-x-[200%] group-has-[#tcl-16-t4:checked]/bar:translate-x-[300%] group-has-[#tcl-16-t5:checked]/bar:translate-x-[400%] motion-reduce:transition-none"></span>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t1"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M4 11.2 12 4l8 7.2V20a1 1 0 0 1-1 1h-4v-6H9v6H5a1 1 0 0 1-1-1z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Home</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t2" checked><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M5 4h9l5 5v11a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1V5a1 1 0 0 1 1-1zm8 1.8V10h4.2z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Library</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t3" aria-describedby="tcl-16-new"><span class="relative"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M12 3.5 14.6 9l6 .9-4.3 4.2 1 6-5.3-2.8-5.3 2.8 1-6L3.4 9.9 9.4 9z" fill="currentColor"/></svg><b id="tcl-16-new" class="absolute -top-0.5 -right-1 size-2.5 rounded-full bg-tcl16-dot shadow-[0_0_0_2px_var(--color-tcl16-clay)] group-has-checked:hidden"><span class="sr-only">New streak reward</span></b></span><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Streaks</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t4"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M12 12a4 4 0 1 0 0-8 4 4 0 0 0 0 8zm0 2c-4 0-7 2.2-7 5v1h14v-1c0-2.8-3-5-7-5z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Profile</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t5"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M4 6h16v2.4H4zm0 4.8h16v2.4H4zm0 4.8h11V18H4z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">More</span></label>
          </div>
        </nav>
      </div>
    </div>
    <p aria-hidden="true" class="rounded-full bg-white/55 px-4 py-2 text-center font-tcl16-mono text-[11.5px] text-tcl16-mut">one translating pill · group-has-checked: label reveal · env(safe-area-inset-bottom)</p>
  </div>
</section>
@import "tailwindcss";

@theme {
  --color-tcl16-bg: #f7e1ee;
  --color-tcl16-bg: oklch(0.93 0.03 340);
  --color-tcl16-glow: #ffedf8;
  --color-tcl16-glow: oklch(0.97 0.03 350);
  --color-tcl16-phone: #f8eaf3;
  --color-tcl16-phone: oklch(0.95 0.02 340);
  --color-tcl16-screen: #f4daea;
  --color-tcl16-screen: oklch(0.915 0.035 340);
  --color-tcl16-clay: #f7d6eb;
  --color-tcl16-clay: oklch(0.91 0.045 340);
  --color-tcl16-accent: #f59cd8;
  --color-tcl16-accent: oklch(0.8 0.13 340);
  --color-tcl16-accentink: #340f29;
  --color-tcl16-accentink: oklch(0.24 0.07 340);
  --color-tcl16-dot: #de3b3d;
  --color-tcl16-dot: oklch(0.6 0.2 25);
  --color-tcl16-shade: #8b537980;
  --color-tcl16-shade: oklch(0.52 0.09 340 / 0.5);
  --color-tcl16-light: #fffcfff2;
  --color-tcl16-light: oklch(1 0.012 340 / 0.95);
  --color-tcl16-ink: #341a2c;
  --color-tcl16-ink: oklch(0.26 0.05 340);
  --color-tcl16-mut: #674c5d;
  --color-tcl16-mut: oklch(0.45 0.045 340);
  --font-tcl16-display: 'Fredoka', system-ui, sans-serif;
  --font-tcl16-sans: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-tcl16-mono: 'JetBrains Mono', ui-monospace, monospace;
  --shadow-tcl16-phone: 0 40px 70px -26px var(--color-tcl16-shade), inset 0 -18px 30px -16px var(--color-tcl16-shade), inset 0 20px 30px -12px var(--color-tcl16-light);
  --shadow-tcl16-screen: inset 0 12px 22px -10px var(--color-tcl16-shade), inset 0 -10px 18px -12px var(--color-tcl16-light);
  --shadow-tcl16-av: 0 8px 14px -7px var(--color-tcl16-shade), inset 0 -6px 10px -7px var(--color-tcl16-shade), inset 0 8px 10px -6px var(--color-tcl16-light);
  --shadow-tcl16-row: 0 12px 20px -14px var(--color-tcl16-shade), inset 0 -8px 14px -10px var(--color-tcl16-shade), inset 0 10px 14px -8px var(--color-tcl16-light);
  --shadow-tcl16-thumb: inset 0 -6px 10px -7px var(--color-tcl16-shade), inset 0 8px 10px -6px var(--color-tcl16-light);
  --shadow-tcl16-dock: 0 26px 44px -18px var(--color-tcl16-shade), inset 0 -12px 20px -12px var(--color-tcl16-shade), inset 0 14px 20px -8px var(--color-tcl16-light);
  --shadow-tcl16-pill: 0 10px 18px -8px var(--color-tcl16-shade), inset 0 -7px 12px -8px var(--color-tcl16-shade), inset 0 9px 12px -6px var(--color-tcl16-light);
}
/* Root rule: the full-bleed contract, stated in CSS as well as in the markup's utilities, so the
   stage is sized before the browser build compiles. */

.tcl-16 {
  width: 100%;
  min-height: 100svh;
}

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-tcl16-bg: #f7e1ee;
  --color-tcl16-bg: oklch(0.93 0.03 340);
  --color-tcl16-glow: #ffedf8;
  --color-tcl16-glow: oklch(0.97 0.03 350);
  --color-tcl16-phone: #f8eaf3;
  --color-tcl16-phone: oklch(0.95 0.02 340);
  --color-tcl16-screen: #f4daea;
  --color-tcl16-screen: oklch(0.915 0.035 340);
  --color-tcl16-clay: #f7d6eb;
  --color-tcl16-clay: oklch(0.91 0.045 340);
  --color-tcl16-accent: #f59cd8;
  --color-tcl16-accent: oklch(0.8 0.13 340);
  --color-tcl16-accentink: #340f29;
  --color-tcl16-accentink: oklch(0.24 0.07 340);
  --color-tcl16-dot: #de3b3d;
  --color-tcl16-dot: oklch(0.6 0.2 25);
  --color-tcl16-shade: #8b537980;
  --color-tcl16-shade: oklch(0.52 0.09 340 / 0.5);
  --color-tcl16-light: #fffcfff2;
  --color-tcl16-light: oklch(1 0.012 340 / 0.95);
  --color-tcl16-ink: #341a2c;
  --color-tcl16-ink: oklch(0.26 0.05 340);
  --color-tcl16-mut: #674c5d;
  --color-tcl16-mut: oklch(0.45 0.045 340);
  --font-tcl16-display: 'Fredoka', system-ui, sans-serif;
  --font-tcl16-sans: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-tcl16-mono: 'JetBrains Mono', ui-monospace, monospace;
  --shadow-tcl16-phone: 0 40px 70px -26px var(--color-tcl16-shade), inset 0 -18px 30px -16px var(--color-tcl16-shade), inset 0 20px 30px -12px var(--color-tcl16-light);
  --shadow-tcl16-screen: inset 0 12px 22px -10px var(--color-tcl16-shade), inset 0 -10px 18px -12px var(--color-tcl16-light);
  --shadow-tcl16-av: 0 8px 14px -7px var(--color-tcl16-shade), inset 0 -6px 10px -7px var(--color-tcl16-shade), inset 0 8px 10px -6px var(--color-tcl16-light);
  --shadow-tcl16-row: 0 12px 20px -14px var(--color-tcl16-shade), inset 0 -8px 14px -10px var(--color-tcl16-shade), inset 0 10px 14px -8px var(--color-tcl16-light);
  --shadow-tcl16-thumb: inset 0 -6px 10px -7px var(--color-tcl16-shade), inset 0 8px 10px -6px var(--color-tcl16-light);
  --shadow-tcl16-dock: 0 26px 44px -18px var(--color-tcl16-shade), inset 0 -12px 20px -12px var(--color-tcl16-shade), inset 0 14px 20px -8px var(--color-tcl16-light);
  --shadow-tcl16-pill: 0 10px 18px -8px var(--color-tcl16-shade), inset 0 -7px 12px -8px var(--color-tcl16-shade), inset 0 9px 12px -6px var(--color-tcl16-light);
}
/* Root rule: the full-bleed contract, stated in CSS as well as in the markup's utilities, so the
   stage is sized before the browser build compiles. */

.tcl-16 {
  width: 100%;
  min-height: 100svh;
}
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=Fredoka:wght@400..700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap">

What changed in the port

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

  • Four .bar:has(#tN:checked) .pill rules became four group-has-[#tcl-16-tN:checked]/bar:translate-x-* utilities on the pill; tabs wrap their radios so group-has-checked: replaces five sibling selectors.
  • A11y fix: role="tablist" on a navigation bar was removed — it promised a tabs widget the markup didn't implement.
  • UI upgrade from the CSS original: the app bar title now follows the active tab (it was stuck on "Library"), so switching tabs visibly changes the screen.
  • UI upgrade: a new-reward dot on Streaks (with a screen-reader description) that clears when the tab is opened, and the app title moved to Fredoka.
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 Mobile Bottom Navigation Bar (Clay Tab Bar)
Source: https://codefronts.com/design-styles/tailwind-css-claymorphism/tailwind-mobile-bottom-navigation-bar-clay/

A floating clay dock with five destinations, a sliding puffy indicator and the two things production tab bars must get right: pb-[calc(12px+env(safe-area-inset-bottom))] to clear the iPhone home bar, and 56px targets. The pill reads the checked radio through group-has-[#tcl-16-t3:checked]/bar:translate-x-[200%]. New: the screen title follows the active tab, and the incorrect role="tablist" is gone.
## HTML
```html
<section class="tcl-16 w-full min-h-svh grid place-items-center bg-tcl16-bg bg-[radial-gradient(80%_60%_at_50%_0%,var(--color-tcl16-glow),transparent_66%)] px-4 py-12 font-tcl16-sans text-tcl16-ink" aria-label="Clay bottom tab bar for mobile demo">
  <div class="grid w-full justify-items-center gap-5">
    <div class="group/phone w-[min(94vw,372px)] rounded-[56px] bg-tcl16-phone p-3.5 shadow-tcl16-phone">
      <div class="relative grid h-[min(70svh,580px)] grid-rows-[auto_1fr_auto] gap-3.5 overflow-hidden rounded-[44px] bg-tcl16-screen px-4 pt-4.5 shadow-tcl16-screen">
        <header class="flex items-center justify-between px-1.5 py-0.5">
          <h3 class="font-tcl16-display text-[22px] font-semibold tracking-[-0.01em]"><span class="hidden group-has-[#tcl-16-t1:checked]/phone:inline">Home</span><span class="hidden group-has-[#tcl-16-t2:checked]/phone:inline">Library</span><span class="hidden group-has-[#tcl-16-t3:checked]/phone:inline">Streaks</span><span class="hidden group-has-[#tcl-16-t4:checked]/phone:inline">Profile</span><span class="hidden group-has-[#tcl-16-t5:checked]/phone:inline">More</span></h3>
          <span aria-hidden="true" class="size-9.5 rounded-full bg-[oklch(0.84_0.1_340)] shadow-tcl16-av"></span>
        </header>
        <div aria-hidden="true" class="grid content-start gap-2.5 overflow-hidden">
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.84_0.1_30)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.84_0.09_190)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.85_0.1_290)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
          <div class="flex items-center gap-3 rounded-[26px] bg-tcl16-clay p-3 shadow-tcl16-row"><span class="size-11.5 flex-none rounded-[18px] bg-[oklch(0.86_0.1_145)] shadow-tcl16-thumb"></span><span class="grid flex-1 gap-2"><i class="block h-2.25 rounded-full bg-tcl16-shade/26"></i><i class="block h-2.25 w-[58%] rounded-full bg-tcl16-shade/26"></i></span></div>
        </div>
        <nav aria-label="Main" class="sticky bottom-0 pb-[calc(12px+env(safe-area-inset-bottom,0px))]">
          <div class="group/bar relative grid grid-cols-5 rounded-[32px] bg-tcl16-clay p-2 shadow-tcl16-dock">
            <span aria-hidden="true" class="absolute top-2 left-2 h-[calc(100%-16px)] w-[calc((100%-16px)/5)] rounded-3xl bg-tcl16-accent shadow-tcl16-pill transition-[translate] duration-[360ms] ease-[cubic-bezier(.34,1.45,.5,1)] group-has-[#tcl-16-t2:checked]/bar:translate-x-full group-has-[#tcl-16-t3:checked]/bar:translate-x-[200%] group-has-[#tcl-16-t4:checked]/bar:translate-x-[300%] group-has-[#tcl-16-t5:checked]/bar:translate-x-[400%] motion-reduce:transition-none"></span>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t1"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M4 11.2 12 4l8 7.2V20a1 1 0 0 1-1 1h-4v-6H9v6H5a1 1 0 0 1-1-1z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Home</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t2" checked><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M5 4h9l5 5v11a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1V5a1 1 0 0 1 1-1zm8 1.8V10h4.2z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Library</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t3" aria-describedby="tcl-16-new"><span class="relative"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M12 3.5 14.6 9l6 .9-4.3 4.2 1 6-5.3-2.8-5.3 2.8 1-6L3.4 9.9 9.4 9z" fill="currentColor"/></svg><b id="tcl-16-new" class="absolute -top-0.5 -right-1 size-2.5 rounded-full bg-tcl16-dot shadow-[0_0_0_2px_var(--color-tcl16-clay)] group-has-checked:hidden"><span class="sr-only">New streak reward</span></b></span><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Streaks</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t4"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M12 12a4 4 0 1 0 0-8 4 4 0 0 0 0 8zm0 2c-4 0-7 2.2-7 5v1h14v-1c0-2.8-3-5-7-5z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">Profile</span></label>
            <label class="group relative flex min-h-14 cursor-pointer flex-col items-center justify-center gap-0.75 overflow-hidden rounded-3xl text-tcl16-mut transition-[color,scale] duration-300 ease-[cubic-bezier(.34,1.4,.5,1)] hover:text-tcl16-ink active:scale-94 has-checked:text-tcl16-accentink has-focus-visible:outline-3 has-focus-visible:-outline-offset-3 has-focus-visible:outline-tcl16-ink"><input class="sr-only" type="radio" name="tcl-16-tab" id="tcl-16-t5"><svg class="flex-none transition-[scale] duration-300 group-has-checked:scale-108" viewBox="0 0 24 24" width="22" height="22" aria-hidden="true"><path d="M4 6h16v2.4H4zm0 4.8h16v2.4H4zm0 4.8h11V18H4z" fill="currentColor"/></svg><span class="max-h-0 text-[10.5px] font-semibold whitespace-nowrap opacity-0 transition-[max-height,opacity] duration-300 group-has-checked:max-h-3.5 group-has-checked:opacity-100">More</span></label>
          </div>
        </nav>
      </div>
    </div>
    <p aria-hidden="true" class="rounded-full bg-white/55 px-4 py-2 text-center font-tcl16-mono text-[11.5px] text-tcl16-mut">one translating pill · group-has-checked: label reveal · env(safe-area-inset-bottom)</p>
  </div>
</section>
```
## CSS
```css
@import "tailwindcss";

@theme {
  --color-tcl16-bg: #f7e1ee;
  --color-tcl16-bg: oklch(0.93 0.03 340);
  --color-tcl16-glow: #ffedf8;
  --color-tcl16-glow: oklch(0.97 0.03 350);
  --color-tcl16-phone: #f8eaf3;
  --color-tcl16-phone: oklch(0.95 0.02 340);
  --color-tcl16-screen: #f4daea;
  --color-tcl16-screen: oklch(0.915 0.035 340);
  --color-tcl16-clay: #f7d6eb;
  --color-tcl16-clay: oklch(0.91 0.045 340);
  --color-tcl16-accent: #f59cd8;
  --color-tcl16-accent: oklch(0.8 0.13 340);
  --color-tcl16-accentink: #340f29;
  --color-tcl16-accentink: oklch(0.24 0.07 340);
  --color-tcl16-dot: #de3b3d;
  --color-tcl16-dot: oklch(0.6 0.2 25);
  --color-tcl16-shade: #8b537980;
  --color-tcl16-shade: oklch(0.52 0.09 340 / 0.5);
  --color-tcl16-light: #fffcfff2;
  --color-tcl16-light: oklch(1 0.012 340 / 0.95);
  --color-tcl16-ink: #341a2c;
  --color-tcl16-ink: oklch(0.26 0.05 340);
  --color-tcl16-mut: #674c5d;
  --color-tcl16-mut: oklch(0.45 0.045 340);
  --font-tcl16-display: 'Fredoka', system-ui, sans-serif;
  --font-tcl16-sans: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-tcl16-mono: 'JetBrains Mono', ui-monospace, monospace;
  --shadow-tcl16-phone: 0 40px 70px -26px var(--color-tcl16-shade), inset 0 -18px 30px -16px var(--color-tcl16-shade), inset 0 20px 30px -12px var(--color-tcl16-light);
  --shadow-tcl16-screen: inset 0 12px 22px -10px var(--color-tcl16-shade), inset 0 -10px 18px -12px var(--color-tcl16-light);
  --shadow-tcl16-av: 0 8px 14px -7px var(--color-tcl16-shade), inset 0 -6px 10px -7px var(--color-tcl16-shade), inset 0 8px 10px -6px var(--color-tcl16-light);
  --shadow-tcl16-row: 0 12px 20px -14px var(--color-tcl16-shade), inset 0 -8px 14px -10px var(--color-tcl16-shade), inset 0 10px 14px -8px var(--color-tcl16-light);
  --shadow-tcl16-thumb: inset 0 -6px 10px -7px var(--color-tcl16-shade), inset 0 8px 10px -6px var(--color-tcl16-light);
  --shadow-tcl16-dock: 0 26px 44px -18px var(--color-tcl16-shade), inset 0 -12px 20px -12px var(--color-tcl16-shade), inset 0 14px 20px -8px var(--color-tcl16-light);
  --shadow-tcl16-pill: 0 10px 18px -8px var(--color-tcl16-shade), inset 0 -7px 12px -8px var(--color-tcl16-shade), inset 0 9px 12px -6px var(--color-tcl16-light);
}
/* Root rule: the full-bleed contract, stated in CSS as well as in the markup's utilities, so the
   stage is sized before the browser build compiles. */

.tcl-16 {
  width: 100%;
  min-height: 100svh;
}
```

How this works

One pill, five positions. The pill is exactly one column wide, so each step is a whole 100% of its own width:

<span class="absolute w-[calc((100%-16px)/5)]
  group-has-[#tcl-16-t2:checked]/bar:translate-x-full
  group-has-[#tcl-16-t3:checked]/bar:translate-x-[200%] …">

Labels as state. Each tab is a label wrapping its radio, so group-has-checked: on the icon and text needs no ids. The text stays in the DOM (it's only collapsed), so every tab keeps its accessible name.

Safe area. env(safe-area-inset-bottom) is 0 in the browser and ~34px on a notched iPhone with viewport-fit=cover, so the dock never sits under the home indicator.

Make it yours

  • Four tabs: grid-cols-4, pill w-[calc((100%-16px)/4)], drop the 400% step.
  • Always-visible labels: remove the max-h-0 opacity-0 pair.
  • Real routing: swap the radios for links and drive the pill from aria-current="page" with group-has-[[aria-current=page]:nth-child(3)]/bar:.

Gotchas — read before shipping

  • role="tablist" is for in-page tab panels, not app navigation — it made screen readers expect arrow-key tab behaviour the demo didn't provide.
  • env() needs <meta name="viewport" content="…, viewport-fit=cover"> to return non-zero values on iOS.
  • Transitioning max-height needs a real value (max-h-3.5), not max-h-none.

Browser support

ChromeSafariFirefoxEdge
111+16.4+128+111+

env(safe-area-inset-*) is universal; only iOS and some Android devices report non-zero insets.

Techniques used in this demo

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