20 Tailwind CSS Popovers
19 / 20

All 20 in 20 Tailwind CSS Popovers

  1. 01Tailwind Popover Show and Hide with the Popover API
  2. 02Tailwind Auto vs Manual Popover Behavior
  3. 03Tailwind Anchored Popover with CSS Anchor Positioning
  4. 04Tailwind Popover Entry and Exit Animation
  5. 05Tailwind Popover Backdrop and Light Dismiss
  6. 06Tailwind Position Area Popover Placement Grid
  7. 07Tailwind Popover Flip with Position Try Fallbacks
  8. 08Tailwind Tooltip Arrow Pointing to Anchor
  9. 09Tailwind Dropdown Matching Anchor Width
  10. 10Tailwind Nested Popover Submenu
  11. 11Tailwind Custom Select Listbox Popover
  12. 12Tailwind Tooltip on Hover and Focus
  13. 13Tailwind User Profile Dropdown Menu
  14. 14Tailwind Date Picker Popover
  15. 15Tailwind Filter Dropdown with Checkboxes
  16. 16Tailwind Popover Fallback and Polyfill
  17. 17Tailwind Popover vs Dialog Modal
  18. 18Tailwind Glassmorphism Popover
  19. 19Tailwind Dark Mode Popover Toggle
  20. 20Tailwind Accessible Tooltip with ARIA
Pure TailwindMIT licensed

Tailwind Dark Mode Popover Toggle

One number drives the whole theme. @theme inline defines every colour as color-mix(light, dark, var(--tpop19-d)); the root sets --tpop19-d to 0 or 1 with four utilities — dark:, has-checked: and dark:has-checked: for the flip-back — and because --tpop19-d is a registered @property, the root can transition it: the page and the open popover crossfade between palettes in the same frame, zero JS.

Live Demo
Plain CSSTailwind v4
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The code

<section class="tpop-19 group/root w-full min-h-svh bg-tpop19-page px-4.5 py-9.5 font-tpop19-sans text-tpop19-ink transition-[--tpop19-d] duration-500 ease-in-out motion-reduce:transition-none dark:[--tpop19-d:1] has-checked:[--tpop19-d:1] dark:has-checked:[--tpop19-d:0]" aria-label="Dark and light mode popover demo">
  <div class="grid min-h-[calc(100svh-76px)] max-w-full place-items-center">
    <div class="w-full min-w-0 max-w-[27rem] rounded-2xl border border-tpop19-rule bg-tpop19-panel p-4.5 shadow-[0_18px_40px_-30px_oklch(0_0_0/0.45)]">
      <div class="mb-3.5 flex flex-wrap items-center justify-between gap-2.5">
        <p class="text-[10.5px] font-bold uppercase tracking-[0.2em] text-tpop19-mut">Appearance</p>
        <div class="relative flex">
          <input id="tpop-19-switch" type="checkbox" class="peer sr-only">
          <label for="tpop-19-switch" class="inline-flex min-h-11 cursor-pointer items-center gap-2.5 rounded-full border border-tpop19-rule px-3 text-[11.5px] font-bold uppercase tracking-[0.12em] text-tpop19-ink select-none peer-focus-visible:outline-3 peer-focus-visible:outline-offset-2 peer-focus-visible:outline-tpop19-acc">
            <span aria-hidden="true" class="relative h-4.5 w-8 flex-none rounded-full bg-tpop19-rule">
              <span class="absolute top-0.5 left-0.5 grid size-3.5 place-items-center rounded-full bg-tpop19-ink text-tpop19-panel transition-transform duration-200 motion-reduce:transition-none group-has-checked/root:translate-x-3.5 dark:translate-x-3.5 dark:group-has-checked/root:translate-x-0"></span>
            </span>
            <span class="group-has-checked/root:hidden dark:hidden dark:group-has-checked/root:inline">Light</span>
            <span class="hidden group-has-checked/root:inline dark:inline dark:group-has-checked/root:hidden">Dark</span>
          </label>
        </div>
      </div>
      <h2 class="mb-2.5 text-[clamp(20px,4.4vw,25px)] font-semibold leading-tight tracking-[-0.02em]">One dial, two palettes</h2>
      <p class="mb-4 text-sm leading-relaxed text-tpop19-mut text-pretty">The panel is in the top layer and still inherits the dial, so it crossfades with the page — open it, then flip the switch.</p>
      <button id="tpop-19-trigger" type="button" popovertarget="tpop-19-panel" class="min-h-11 cursor-pointer rounded-xl bg-tpop19-acc px-4 text-[13.5px] font-semibold text-tpop19-onacc transition-[filter] [anchor-name:--tpop19-a] hover:brightness-110 focus-visible:outline-3 focus-visible:outline-offset-2 focus-visible:outline-tpop19-acc">Open themed panel</button>
      <dl class="mt-4.5 grid gap-2 border-t border-tpop19-rule pt-3.5">
        <div class="flex min-w-0 items-center justify-between gap-3"><dt class="flex items-center gap-2 font-tpop19-mono text-xs font-semibold text-tpop19-acc"><span aria-hidden="true" class="size-3 rounded-[4px] border border-tpop19-rule bg-tpop19-page"></span>--color-tpop19-page</dt><dd class="text-[12.5px] text-tpop19-mut">page</dd></div>
        <div class="flex min-w-0 items-center justify-between gap-3"><dt class="flex items-center gap-2 font-tpop19-mono text-xs font-semibold text-tpop19-acc"><span aria-hidden="true" class="size-3 rounded-[4px] border border-tpop19-rule bg-tpop19-panel"></span>--color-tpop19-panel</dt><dd class="text-[12.5px] text-tpop19-mut">surfaces</dd></div>
        <div class="flex min-w-0 items-center justify-between gap-3"><dt class="flex items-center gap-2 font-tpop19-mono text-xs font-semibold text-tpop19-acc"><span aria-hidden="true" class="size-3 rounded-[4px] bg-tpop19-ink"></span>--color-tpop19-ink</dt><dd class="text-[12.5px] text-tpop19-mut">text</dd></div>
      </dl>
    </div>
  </div>

  <div popover="auto" id="tpop-19-panel" role="group" aria-label="Themed panel" class="fixed m-auto w-[min(18rem,calc(100vw-28px))] rounded-2xl border border-tpop19-rule bg-tpop19-panel p-4 text-tpop19-ink opacity-0 shadow-[0_20px_40px_-24px_oklch(0_0_0/0.45)] transition-[opacity,translate,display,overlay] duration-150 ease-out transition-discrete [position-anchor:--tpop19-a] [position-area:block-end_span-inline-end] [position-try-fallbacks:flip-block] open:opacity-100 starting:open:-translate-y-1 starting:open:opacity-0 motion-reduce:transition-none supports-[anchor-name:--a]:inset-auto supports-[anchor-name:--a]:m-0 supports-[anchor-name:--a]:mt-2.5">
    <p class="mb-2 text-[11px] font-bold uppercase tracking-[0.16em] text-tpop19-mut">Themed panel</p>
    <p class="mb-3 text-[13.5px] leading-relaxed">Flip the switch with me open. Both surfaces fade in the same frame because they read the same dial.</p>
    <p class="border-t border-tpop19-rule pt-2.5 font-tpop19-mono text-[11.5px] font-semibold text-tpop19-acc">zero JavaScript</p>
  </div>
</section>
@import "tailwindcss";
/* The theme dial: registered so it can transition (0 = light, 1 = dark). */

@property --tpop19-d {
  syntax: '<number>';
  inherits: true;
  initial-value: 0;
}
/* inline: each utility carries the expression itself, so it resolves against the dial the element
   inherits rather than once on :root. Light value last, dark value first. */

@theme inline {
  --color-tpop19-page: color-mix(in oklch, oklch(0.185 0.01 270) calc(var(--tpop19-d) * 100%), oklch(0.975 0.003 270));
  --color-tpop19-panel: color-mix(in oklch, oklch(0.235 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
  --color-tpop19-ink: color-mix(in oklch, oklch(0.94 0.008 270) calc(var(--tpop19-d) * 100%), oklch(0.2 0.01 270));
  --color-tpop19-mut: color-mix(in oklch, oklch(0.74 0.015 270) calc(var(--tpop19-d) * 100%), oklch(0.48 0.012 270));
  --color-tpop19-rule: color-mix(in oklch, oklch(0.32 0.012 270) calc(var(--tpop19-d) * 100%), oklch(0.9 0.006 270));
  --color-tpop19-acc: color-mix(in oklch, oklch(0.74 0.12 262) calc(var(--tpop19-d) * 100%), oklch(0.5 0.17 262));
  --color-tpop19-onacc: color-mix(in oklch, oklch(0.185 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
}

@theme {
  --font-tpop19-sans: 'Geist', system-ui, sans-serif;
  --font-tpop19-mono: 'Geist Mono', ui-monospace, monospace;
}
/* 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. */

.tpop-19 {
  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";
/* The theme dial: registered so it can transition (0 = light, 1 = dark). */

@property --tpop19-d {
  syntax: '<number>';
  inherits: true;
  initial-value: 0;
}
/* inline: each utility carries the expression itself, so it resolves against the dial the element
   inherits rather than once on :root. Light value last, dark value first. */

@theme inline {
  --color-tpop19-page: color-mix(in oklch, oklch(0.185 0.01 270) calc(var(--tpop19-d) * 100%), oklch(0.975 0.003 270));
  --color-tpop19-panel: color-mix(in oklch, oklch(0.235 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
  --color-tpop19-ink: color-mix(in oklch, oklch(0.94 0.008 270) calc(var(--tpop19-d) * 100%), oklch(0.2 0.01 270));
  --color-tpop19-mut: color-mix(in oklch, oklch(0.74 0.015 270) calc(var(--tpop19-d) * 100%), oklch(0.48 0.012 270));
  --color-tpop19-rule: color-mix(in oklch, oklch(0.32 0.012 270) calc(var(--tpop19-d) * 100%), oklch(0.9 0.006 270));
  --color-tpop19-acc: color-mix(in oklch, oklch(0.74 0.12 262) calc(var(--tpop19-d) * 100%), oklch(0.5 0.17 262));
  --color-tpop19-onacc: color-mix(in oklch, oklch(0.185 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
}

@theme {
  --font-tpop19-sans: 'Geist', system-ui, sans-serif;
  --font-tpop19-mono: 'Geist Mono', ui-monospace, monospace;
}
/* 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. */

.tpop-19 {
  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=Geist:wght@400..800&family=Geist+Mono:wght@400..600&display=swap">

What changed in the port

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

  • Four token blocks (light, checked-dark, OS-dark, OS-dark-checked) of six properties each — 24 declarations — became one dial and four root utilities; every colour is defined once, as a light/dark pair.
  • .pop-19__switch's hand-rolled clip became peer sr-only; the label's focus ring is peer-focus-visible:outline-3.
  • UI upgrade from the CSS original: the theme crossfades over 500ms — page, card, open popover and swatches together — because --tpop19-d is a registered @property that the root transitions; the original snapped (and stills under motion-reduce:).
  • UI upgrade: the token list shows live swatches of each colour, the label always names the palette currently showing, and hex fallbacks are unnecessary here — this demo is color-mix()-native, which Tailwind v4's own floor already requires.
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 Dark Mode Popover Toggle
Source: https://codefronts.com/snippets/tailwind-css-popovers/tailwind-dark-mode-popover-toggle/

One number drives the whole theme. @theme inline defines every colour as color-mix(light, dark, var(--tpop19-d)); the root sets --tpop19-d to 0 or 1 with four utilities — dark:, has-checked: and dark:has-checked: for the flip-back — and because --tpop19-d is a registered @property, the root can transition it: the page and the open popover crossfade between palettes in the same frame, zero JS.
## HTML
```html
<section class="tpop-19 group/root w-full min-h-svh bg-tpop19-page px-4.5 py-9.5 font-tpop19-sans text-tpop19-ink transition-[--tpop19-d] duration-500 ease-in-out motion-reduce:transition-none dark:[--tpop19-d:1] has-checked:[--tpop19-d:1] dark:has-checked:[--tpop19-d:0]" aria-label="Dark and light mode popover demo">
  <div class="grid min-h-[calc(100svh-76px)] max-w-full place-items-center">
    <div class="w-full min-w-0 max-w-[27rem] rounded-2xl border border-tpop19-rule bg-tpop19-panel p-4.5 shadow-[0_18px_40px_-30px_oklch(0_0_0/0.45)]">
      <div class="mb-3.5 flex flex-wrap items-center justify-between gap-2.5">
        <p class="text-[10.5px] font-bold uppercase tracking-[0.2em] text-tpop19-mut">Appearance</p>
        <div class="relative flex">
          <input id="tpop-19-switch" type="checkbox" class="peer sr-only">
          <label for="tpop-19-switch" class="inline-flex min-h-11 cursor-pointer items-center gap-2.5 rounded-full border border-tpop19-rule px-3 text-[11.5px] font-bold uppercase tracking-[0.12em] text-tpop19-ink select-none peer-focus-visible:outline-3 peer-focus-visible:outline-offset-2 peer-focus-visible:outline-tpop19-acc">
            <span aria-hidden="true" class="relative h-4.5 w-8 flex-none rounded-full bg-tpop19-rule">
              <span class="absolute top-0.5 left-0.5 grid size-3.5 place-items-center rounded-full bg-tpop19-ink text-tpop19-panel transition-transform duration-200 motion-reduce:transition-none group-has-checked/root:translate-x-3.5 dark:translate-x-3.5 dark:group-has-checked/root:translate-x-0"></span>
            </span>
            <span class="group-has-checked/root:hidden dark:hidden dark:group-has-checked/root:inline">Light</span>
            <span class="hidden group-has-checked/root:inline dark:inline dark:group-has-checked/root:hidden">Dark</span>
          </label>
        </div>
      </div>
      <h2 class="mb-2.5 text-[clamp(20px,4.4vw,25px)] font-semibold leading-tight tracking-[-0.02em]">One dial, two palettes</h2>
      <p class="mb-4 text-sm leading-relaxed text-tpop19-mut text-pretty">The panel is in the top layer and still inherits the dial, so it crossfades with the page — open it, then flip the switch.</p>
      <button id="tpop-19-trigger" type="button" popovertarget="tpop-19-panel" class="min-h-11 cursor-pointer rounded-xl bg-tpop19-acc px-4 text-[13.5px] font-semibold text-tpop19-onacc transition-[filter] [anchor-name:--tpop19-a] hover:brightness-110 focus-visible:outline-3 focus-visible:outline-offset-2 focus-visible:outline-tpop19-acc">Open themed panel</button>
      <dl class="mt-4.5 grid gap-2 border-t border-tpop19-rule pt-3.5">
        <div class="flex min-w-0 items-center justify-between gap-3"><dt class="flex items-center gap-2 font-tpop19-mono text-xs font-semibold text-tpop19-acc"><span aria-hidden="true" class="size-3 rounded-[4px] border border-tpop19-rule bg-tpop19-page"></span>--color-tpop19-page</dt><dd class="text-[12.5px] text-tpop19-mut">page</dd></div>
        <div class="flex min-w-0 items-center justify-between gap-3"><dt class="flex items-center gap-2 font-tpop19-mono text-xs font-semibold text-tpop19-acc"><span aria-hidden="true" class="size-3 rounded-[4px] border border-tpop19-rule bg-tpop19-panel"></span>--color-tpop19-panel</dt><dd class="text-[12.5px] text-tpop19-mut">surfaces</dd></div>
        <div class="flex min-w-0 items-center justify-between gap-3"><dt class="flex items-center gap-2 font-tpop19-mono text-xs font-semibold text-tpop19-acc"><span aria-hidden="true" class="size-3 rounded-[4px] bg-tpop19-ink"></span>--color-tpop19-ink</dt><dd class="text-[12.5px] text-tpop19-mut">text</dd></div>
      </dl>
    </div>
  </div>

  <div popover="auto" id="tpop-19-panel" role="group" aria-label="Themed panel" class="fixed m-auto w-[min(18rem,calc(100vw-28px))] rounded-2xl border border-tpop19-rule bg-tpop19-panel p-4 text-tpop19-ink opacity-0 shadow-[0_20px_40px_-24px_oklch(0_0_0/0.45)] transition-[opacity,translate,display,overlay] duration-150 ease-out transition-discrete [position-anchor:--tpop19-a] [position-area:block-end_span-inline-end] [position-try-fallbacks:flip-block] open:opacity-100 starting:open:-translate-y-1 starting:open:opacity-0 motion-reduce:transition-none supports-[anchor-name:--a]:inset-auto supports-[anchor-name:--a]:m-0 supports-[anchor-name:--a]:mt-2.5">
    <p class="mb-2 text-[11px] font-bold uppercase tracking-[0.16em] text-tpop19-mut">Themed panel</p>
    <p class="mb-3 text-[13.5px] leading-relaxed">Flip the switch with me open. Both surfaces fade in the same frame because they read the same dial.</p>
    <p class="border-t border-tpop19-rule pt-2.5 font-tpop19-mono text-[11.5px] font-semibold text-tpop19-acc">zero JavaScript</p>
  </div>
</section>
```
## CSS
```css
@import "tailwindcss";
/* The theme dial: registered so it can transition (0 = light, 1 = dark). */

@property --tpop19-d {
  syntax: '<number>';
  inherits: true;
  initial-value: 0;
}
/* inline: each utility carries the expression itself, so it resolves against the dial the element
   inherits rather than once on :root. Light value last, dark value first. */

@theme inline {
  --color-tpop19-page: color-mix(in oklch, oklch(0.185 0.01 270) calc(var(--tpop19-d) * 100%), oklch(0.975 0.003 270));
  --color-tpop19-panel: color-mix(in oklch, oklch(0.235 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
  --color-tpop19-ink: color-mix(in oklch, oklch(0.94 0.008 270) calc(var(--tpop19-d) * 100%), oklch(0.2 0.01 270));
  --color-tpop19-mut: color-mix(in oklch, oklch(0.74 0.015 270) calc(var(--tpop19-d) * 100%), oklch(0.48 0.012 270));
  --color-tpop19-rule: color-mix(in oklch, oklch(0.32 0.012 270) calc(var(--tpop19-d) * 100%), oklch(0.9 0.006 270));
  --color-tpop19-acc: color-mix(in oklch, oklch(0.74 0.12 262) calc(var(--tpop19-d) * 100%), oklch(0.5 0.17 262));
  --color-tpop19-onacc: color-mix(in oklch, oklch(0.185 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
}

@theme {
  --font-tpop19-sans: 'Geist', system-ui, sans-serif;
  --font-tpop19-mono: 'Geist Mono', ui-monospace, monospace;
}
/* 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. */

.tpop-19 {
  width: 100%;
  min-height: 100svh;
}
```

How this works

Tokens that read a dial. @theme inline writes the expression into every utility instead of a variable reference, so bg-tpop19-panel resolves against whatever --tpop19-d the element inherits:

@property --tpop19-d { syntax: '<number>'; inherits: true; initial-value: 0; }
@theme inline {
  --color-tpop19-panel: color-mix(in oklch,
    oklch(0.235 0.01 270) calc(var(--tpop19-d) * 100%), oklch(1 0 0));
}
<section class="dark:[--tpop19-d:1] has-checked:[--tpop19-d:1]
  dark:has-checked:[--tpop19-d:0] transition-[--tpop19-d] duration-500">

The panel can't drift. A popover is in the top layer but still in the DOM, so it inherits --tpop19-d from the root like everything else — mid-transition included.

The flip-back rule. On a dark OS the unchecked state is dark and checking must return light; dark:has-checked: is emitted after has-checked: (the dark variant sorts later), so it wins. Without it the switch does nothing for visitors whose OS already matches.

Make it yours

  • Snap instead of fade: delete transition-[--tpop19-d] duration-500.
  • High-contrast third palette: add a second dial (--tpop19-hc) and nest another color-mix().
  • Theme the page from the panel: move the switch inside the popover — has-checked: still sees it.

Gotchas — read before shipping

  • Without @property the dial is a plain string and cannot transition — it will snap.
  • @theme (not inline) would resolve the mix once on :root, and the dial would stop working per element.
  • sr-only, not hidden, on the checkbox — display:none removes it from the tab order.

Browser support

ChromeSafariFirefoxEdge
125+26+131+125+

@property is Chrome 85 / Safari 16.4 / Firefox 128; :has() Chrome 105 / Safari 15.4 / Firefox 121; the floor is anchoring the panel. Without :has() the demo still follows the OS preference.

Techniques used in this demo

Utilitiesfirst-class utility or variant

color-mix()tw ↗:has()tw ↗

Plain CSSno Tailwind surface

@propertytw ↗

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