# Tabs

> Tabs with a pill (or a line) that slides to the chosen one, a panel that comes in from its side, and the full keyboard pattern.

Navigation · tabs, nav, indicator, keyboard · HTML, CSS, vanilla JS · no dependencies · updated 2026-10-21
Demo: https://kodza.dev/components/tabs-component/

## Files

The code below, served as files: byte for byte what the Kodza site copies (the CSS includes its theme guard).

- [`kodza-tabs-component.css`](https://kodza.dev/registry/tabs-component/kodza-tabs-component.css) · 9.5 KB
- [`kodza-tabs-component.js`](https://kodza.dev/registry/tabs-component/kodza-tabs-component.js) · 6.1 KB
- [`kodza-tabs-component.html`](https://kodza.dev/registry/tabs-component/kodza-tabs-component.html) · 2.0 KB · the markup, to adapt and paste into your page

**Can you run shell commands? Download the CSS and the JS, don't retype them.** Retyping costs thousands of tokens and can drop or change lines of the CSS. Put the files where your stack expects them (Use it says where: change the `-o` paths):

```bash
curl -fsSL --create-dirs -o kodza/kodza-tabs-component.css https://kodza.dev/registry/tabs-component/kodza-tabs-component.css
curl -fsSL --create-dirs -o kodza/kodza-tabs-component.js https://kodza.dev/registry/tabs-component/kodza-tabs-component.js
```

Then load the files from your page as Use it shows, instead of pasting the content. The HTML is the part you adapt (text, links, modifiers): paste it from the Code section. Copy the CSS and the JS from the Code section only if you can't run commands, exactly as they are. (Windows PowerShell: `curl.exe`.)

## API

- Root: `.kodza-tabs`
- Variables (set them on the root element itself: it declares its own defaults):
  - `--kz-tabs-bg: #ffffff`
  - `--kz-tabs-fg: #0a0a0a`
  - `--kz-tabs-muted: rgba(10, 10, 10, 0.58)`
  - `--kz-tabs-border: rgba(10, 10, 10, 0.1)`
  - `--kz-tabs-ink: #0a0a0a`
  - `--kz-tabs-on-ink: #ffffff`
  - `--kz-tabs-width: 520px`
  - `--kz-tabs-duration: 0.5s`
  - `--kz-tabs-ease: cubic-bezier(0.22, 1, 0.36, 1)`
- Modifiers: `.kodza-tabs--line`
- Lifecycle: `kodza:init` / `kodza:destroy` on `document`, with `{ detail: { root } }` to target a container.

## Keyboard

What each key does, by where the focus is. Keep it working when you adapt the HTML: same elements, same classes.

- On a tab (focus in `.kodza-tabs__list`):
  - `ArrowRight` / `ArrowLeft`: Shows the next or previous tab, round and round
  - `Home` / `End`: Shows the first or last tab
  - `Tab`: Skips the other tabs, on to the panel

## Dark mode

The values Kodza uses on a dark background (`#0a0a0a`). For a page that follows the system theme, add them after the component's CSS:

```css
@media (prefers-color-scheme: dark) {
  .kodza-tabs {
    --kz-tabs-bg: #161616;
    --kz-tabs-fg: #f2f2f0;
    --kz-tabs-muted: rgba(242, 242, 240, 0.62);
    --kz-tabs-border: rgba(255, 255, 255, 0.12);
    --kz-tabs-ink: #f2f2f0;
    --kz-tabs-on-ink: #0a0a0a;
  }
}
```

A site with its own theme switch puts the same rules under its dark selector instead (`[data-theme="dark"] .kodza-tabs { … }`); a single dark section, under that section's class.

## Use it

### Plain HTML page

- CSS: `kodza/kodza-tabs-component.css` next to the page (the Files commands as they are), linked in `<head>`: `<link rel="stylesheet" href="kodza/kodza-tabs-component.css">`. Without a shell, paste it in a `<style>` in `<head>` instead. It only touches `kodza-` classes.
- HTML: where the component goes. Paste it as many times as you need: instances never interfere.
- JS: `kodza/kodza-tabs-component.js`, loaded with `<script src="kodza/kodza-tabs-component.js" defer></script>` in `<head>`. Without a shell, paste it in a `<script>` before `</body>` (or in `<head>`: it waits for the page). One copy per page, whatever the number of instances.
- Restyle with the `--kz-…` variables, set on the component's root element itself (the root declares its own defaults, so a value on an ancestor is ignored), and with the modifiers / attributes listed under API.
- Font: it takes the page's own. The Kodza look is Geist: `<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap">`.
- Content added later (AJAX navigation, a SPA route, a builder preview): start it with `document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root: container } }))`; before removing it, the same call with `'kodza:destroy'` stops it and puts the original markup back.

### Claude artifact (claude.ai)

- Paste the CSS in a `<style>` and the JS in a `<script>` at the end, in the artifact itself: it loads stylesheets only from Google Fonts and scripts only from a few CDNs, so no `<link>` or `<script src>` to Kodza.
- Writing the artifact file with a shell? Insert the downloaded files (Files) with a command instead of retyping them: a line `KODZA-CSS` alone inside the `<style>`, `KODZA-JS` inside the `<script>`, then `sed -e '/^KODZA-CSS$/{r kodza/kodza-tabs-component.css' -e 'd' -e '}' -e '/^KODZA-JS$/{r kodza/kodza-tabs-component.js' -e 'd' -e '}' page.html > artifact.html`.
- Font: load Geist from Google Fonts (allowed): `<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap">`.
- Dark mode: the viewer sets `data-theme="dark"` or `"light"` on `<html>`, or nothing when it follows the system. Write the Dark mode rules twice: inside `@media (prefers-color-scheme: dark)` with `:root:not([data-theme="light"])` in front of each selector, and with `:root[data-theme="dark"]` in front of each selector.

### WordPress

- HTML: a **Custom HTML** block (or a pattern / template part). WordPress keeps this markup as it is only for users allowed to post unfiltered HTML (Administrators; Super Admins on multisite): for anyone else it strips tags such as `<svg>`, `<input>` or `<dialog>`, so add it from the theme (a pattern or template part) instead.
- CSS and JS: the downloaded files go in the theme, under `wp-content/themes/<your-theme>/kodza/` (the child theme if there is one), enqueued from its functions.php (or a code-snippets plugin):
  ```php
  add_action('wp_enqueue_scripts', function () {
    $dir = get_stylesheet_directory() . '/kodza/';
    $uri = get_stylesheet_directory_uri() . '/kodza/';
    wp_enqueue_style('kodza-tabs-component', $uri . 'kodza-tabs-component.css', [], filemtime($dir . 'kodza-tabs-component.css'));
    wp_enqueue_script('kodza-tabs-component', $uri . 'kodza-tabs-component.js', [], filemtime($dir . 'kodza-tabs-component.js'), true);
  });
  ```
  Scoped to `kodza-` classes, the CSS never touches the theme. One copy of the JS, whatever the number of blocks.
- No access to the theme files? The CSS can also go, as it is, in **Appearance → Customize → Additional CSS** (classic theme) or **Styles → Additional CSS** in the Site Editor (block theme).
- Theme with AJAX page transitions: fire `kodza:init` on the new content after each swap (and `kodza:destroy` on the old one).
- Performance plugin (WP Rocket, LiteSpeed Cache, Perfmatters…) with **Delay JavaScript execution** turned on: add `kodza` to the scripts it must not delay. Otherwise the component waits for the visitor's first scroll, tap or mouse move, and that first click can be lost.
- Colours: by default, match the theme's palette. After the component's CSS, point these variables at the theme's colours, on the component root, Kodza's value as the fallback:
  `.kodza-tabs { --kz-tabs-fg: var(TEXT, #0a0a0a); --kz-tabs-bg: var(BACKGROUND, #ffffff); --kz-tabs-ink: var(ACCENT, #0a0a0a); --kz-tabs-on-ink: var(BACKGROUND, #ffffff); }`
  TEXT, BACKGROUND and ACCENT (the colour the theme fills its own buttons with) are the theme's own colour variables — block themes (theme.json, like Twenty Twenty-Five): `--wp--preset--color--contrast`, `--wp--preset--color--base`, `--wp--preset--color--contrast` (they fill their buttons with it; their accent-1… colours are decorative); Astra: `--ast-global-color-2`, `--ast-global-color-4`, `--ast-global-color-0`; Kadence: `--global-palette3`, `--global-palette9`, `--global-palette1`; GeneratePress: `--contrast`, `--base-3`, `--accent`; Blocksy: `--theme-palette-color-4`, `--theme-palette-color-8`, `--theme-palette-color-1`. Use only these names, and only if the site really has them (the theme's CSS, or Styles → Colors): the `--wp--preset--color--black`, `--white`, `--vivid-…` that WordPress adds everywhere are not the theme's palette. Another theme, or one without these variables (Hello Elementor, OceanWP): leave the variables alone, it keeps Kodza's monochrome; same when the developer asks for monochrome or the Kodza look. Leave the translucent greys (`rgba(10, 10, 10, …)`) as they are: they suit any light background. On a dark palette, set the other variables from Dark mode too.
- WordPress turns straight quotes and `--` into typographic ones in the text of a Custom HTML block (not inside `<code>` or `<pre>`).

#### With Elementor

- HTML: an **HTML** widget (Elementor shows it to administrators only). It keeps the code exactly as pasted, straight quotes included.
- CSS and JS: as above. Elementor's Site Settings → Theme Style styles every button, field, link and image of the page, components included; the theme guard at the end of the CSS keeps the component's buttons, fields and link colours as they are.
- The Elementor editor redraws each widget after the page has loaded: without the script below, the component stays still in the editor preview (the published page works). Add it once per site, in the footer like the component's script (`kodza/elementor-editor.js`, or a code-snippets plugin):

```js
// Kodza in the Elementor editor: the editor redraws each HTML widget after the page has loaded.
// Start Kodza in what it draws, stop it in what it replaces or removes. Once per site.
window.addEventListener('elementor/frontend/init', () => {
  if (!elementorFrontend.isEditMode()) return;
  class KodzaWidget extends elementorModules.frontend.handlers.Base {
    onInit() {
      super.onInit();
      this.kodza = [...this.$element[0].children];
      document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root: this.$element[0] } }));
    }
    onDestroy() {
      super.onDestroy();
      this.kodza.forEach((root) => document.dispatchEvent(new CustomEvent('kodza:destroy', { detail: { root } })));
    }
  }
  elementorFrontend.elementsHandler.attachHandler('html', KodzaWidget);
});
```

- No child theme: everything can go in the HTML widget instead, `<style>` with the CSS, the HTML, then `<script>` with the JS. It works on the page and in the editor without the script above.

### Shopify

- Files: `assets/kodza-tabs-component.css` and `assets/kodza-tabs-component.js` (the Files commands with `-o assets/…`).
- In the section: `{{ 'kodza-tabs-component.css' | asset_url | stylesheet_tag }}` and `<script src="{{ 'kodza-tabs-component.js' | asset_url }}" defer></script>`, then the HTML.
- The theme editor re-renders sections: restart them with
  `document.addEventListener('shopify:section:load', (e) => document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root: e.target } })));`
  and the same with `shopify:section:unload` → `kodza:destroy`.

### React / Next.js

- Files, side by side (e.g. in `components/kodza/`): `Tabs.tsx` (below), the CSS block under Code saved as `tabs-component.css` and the JS block as `tabs-component.js`, both as they are. The HTML block is already inside the component: skip it.
- Use it: `import { Tabs } from '@/components/kodza/Tabs';` then `<Tabs />`. Props: `variant` ("line", or several in an array), `vars` (the `--kz-…` variables listed under API, e.g. `vars={{ '--kz-tabs-bg': … }}`), `className`, `style` and the other props of its `<div>` (`onClick`, `aria-…`).
- Next.js App Router: it is a Client Component already (`'use client'`). Pages Router: Next.js takes global CSS only in `pages/_app`, so move the `import './tabs-component.css'` line there.
- Safe under StrictMode, client-side navigation and prop changes: when a prop changes, the `key` gives React a fresh element, `kodza:destroy` stops the script on the old one and `kodza:init` starts it on the new one.

```tsx
'use client';
// Kodza — Tabs, for React. From https://kodza.dev/components/tabs-component/
// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Next to this file: tabs-component.css and tabs-component.js, the component's CSS and JS from Kodza, as they are.
// Yours to edit: the markup is plain JSX below.
// The script changes this markup once React has rendered it (it adds layers, splits text, moves
// nodes), so React must not patch it afterwards. When a prop changes, the key gives React a fresh
// element: kodza:destroy stops the script on the old one, kodza:init starts it on the new one.
import { useRef, useEffect, type ComponentPropsWithoutRef, type ComponentRef, type CSSProperties } from 'react';
import './tabs-component.css';

type Variant = "line";

export type TabsProps = Omit<ComponentPropsWithoutRef<'div'>, "children" | "variant" | "vars"> & {
  /** Modifier class(es): .kodza-tabs--line */
  variant?: Variant | Variant[];
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: #ffffff */
    "--kz-tabs-bg"?: string | number;
    /** default: #0a0a0a */
    "--kz-tabs-fg"?: string | number;
    /** default: rgba(10, 10, 10, 0.58) */
    "--kz-tabs-muted"?: string | number;
    /** default: rgba(10, 10, 10, 0.1) */
    "--kz-tabs-border"?: string | number;
    /** default: #0a0a0a */
    "--kz-tabs-ink"?: string | number;
    /** default: #ffffff */
    "--kz-tabs-on-ink"?: string | number;
    /** default: 520px */
    "--kz-tabs-width"?: string | number;
    /** default: 0.5s */
    "--kz-tabs-duration"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-tabs-ease"?: string | number;
  };
  className?: string;
};

export function Tabs({ variant, vars, className, style, ...rest }: TabsProps) {
  const ref = useRef<ComponentRef<'div'>>(null);
  const classes = ["kodza-tabs", ...([] as string[]).concat(variant ?? []).map((v) => `kodza-tabs--${v}`), className].filter(Boolean).join(' ');
  // Everything the markup is made of: when it changes, React gets a fresh element (see the top)
  const key = JSON.stringify([classes, vars, style, rest]);

  // Starts the script on this element once React has rendered it, stops it when it goes
  useEffect(() => {
    const root = ref.current;
    let live = true;
    // @ts-ignore: a plain script, no types to find
    import('./tabs-component.js').then(() => {
      if (live) document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root } }));
    });
    return () => {
      live = false;
      document.dispatchEvent(new CustomEvent('kodza:destroy', { detail: { root } }));
    };
  }, [key]);

  return (
    <div key={key} {...rest} className={classes} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <div className="kodza-tabs__list" role="tablist" aria-label="Component details">
        <span className="kodza-tabs__indicator" aria-hidden="true" />
        {' '}
        <button className="kodza-tabs__tab" type="button" role="tab" aria-selected="true">Preview</button>
        {' '}
        <button className="kodza-tabs__tab" type="button" role="tab" aria-selected="false">Code</button>
        {' '}
        <button className="kodza-tabs__tab" type="button" role="tab" aria-selected="false">Changelog</button>
      </div>
      <div className="kodza-tabs__panels">
        <div className="kodza-tabs__panel" role="tabpanel">
          <p>It moves, it fades, and it sits still for people who asked for less motion. Your designer will nod slowly.</p>
        </div>
        <div className="kodza-tabs__panel" role="tabpanel" hidden>
          <p>One HTML block, one CSS file, a few lines of JS. No build step was harmed in the making of this tab.</p>
        </div>
        <div className="kodza-tabs__panel" role="tabpanel" hidden>
          <p>v1.2 fixed the bug we shipped in v1.1. v1.3 will fix the one we shipped in v1.2.</p>
        </div>
      </div>
    </div>
  );
}
```

## Code

```html
<div class="kodza-tabs">
  <div class="kodza-tabs__list" role="tablist" aria-label="Component details">
    <span class="kodza-tabs__indicator" aria-hidden="true"></span>
    <button class="kodza-tabs__tab" type="button" role="tab" aria-selected="true">Preview</button>
    <button class="kodza-tabs__tab" type="button" role="tab" aria-selected="false">Code</button>
    <button class="kodza-tabs__tab" type="button" role="tab" aria-selected="false">Changelog</button>
  </div>
  <div class="kodza-tabs__panels">
    <div class="kodza-tabs__panel" role="tabpanel">
      <p>It moves, it fades, and it sits still for people who asked for less motion. Your designer will nod slowly.</p>
    </div>
    <div class="kodza-tabs__panel" role="tabpanel" hidden>
      <p>One HTML block, one CSS file, a few lines of JS. No build step was harmed in the making of this tab.</p>
    </div>
    <div class="kodza-tabs__panel" role="tabpanel" hidden>
      <p>v1.2 fixed the bug we shipped in v1.1. v1.3 will fix the one we shipped in v1.2.</p>
    </div>
  </div>
</div>

<div class="kodza-tabs kodza-tabs--line">
  <div class="kodza-tabs__list" role="tablist" aria-label="Notifications">
    <span class="kodza-tabs__indicator" aria-hidden="true"></span>
    <button class="kodza-tabs__tab" type="button" role="tab" aria-selected="true">All</button>
    <button class="kodza-tabs__tab" type="button" role="tab" aria-selected="false">Unread</button>
    <button class="kodza-tabs__tab" type="button" role="tab" aria-selected="false">Mentions</button>
  </div>
  <div class="kodza-tabs__panels">
    <div class="kodza-tabs__panel" role="tabpanel">
      <p>142 notifications. 140 of them are a bot telling you the build passed.</p>
    </div>
    <div class="kodza-tabs__panel" role="tabpanel" hidden>
      <p>Three unread. One is from your mum: she found the website.</p>
    </div>
    <div class="kodza-tabs__panel" role="tabpanel" hidden>
      <p>Nobody mentioned you. Enjoy the quiet while it lasts.</p>
    </div>
  </div>
  </div>
```

```css
/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Tabs
   Tabs with a pill that slides to the chosen one (or a line, with --line), and a panel that
   comes in from the side of the tab you picked. Arrow keys, Home and End move between tabs.
   More tabs than room (a phone): the row scrolls sideways and follows the chosen tab.
   Everything is tuned with the --kz-tabs-* variables. */
.kodza-tabs {
  --kz-tabs-bg: #ffffff;
  --kz-tabs-fg: #0a0a0a;
  --kz-tabs-muted: rgba(10, 10, 10, 0.58);
  --kz-tabs-border: rgba(10, 10, 10, 0.1);
  --kz-tabs-ink: #0a0a0a;
  --kz-tabs-on-ink: #ffffff;
  --kz-tabs-width: 520px;
  --kz-tabs-duration: 0.5s;
  --kz-tabs-ease: cubic-bezier(0.22, 1, 0.36, 1);

  width: 100%;
  max-width: var(--kz-tabs-width);
  color: var(--kz-tabs-fg);
}

.kodza-tabs__list {
  position: relative;
  display: inline-flex;
  box-sizing: border-box;
  max-width: 100%;
  padding: 4px;
  border-radius: 999px;
  background: var(--kz-tabs-bg);
  box-shadow: inset 0 0 0 1px var(--kz-tabs-border);
}

/* More tabs than room: the row scrolls sideways (the script adds is-scroll) */
.kodza-tabs__list.is-scroll {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.kodza-tabs__list.is-scroll::-webkit-scrollbar {
  display: none;
}

/* The pill covers the whole row (scrolled part included) and is cut down to the chosen tab:
   only clip-path moves */
.kodza-tabs__indicator {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--kz-tabs-track, 100%);
  border-radius: 999px;
  background: var(--kz-tabs-ink);
  clip-path: inset(4px var(--kz-ind-r, 100%) 4px var(--kz-ind-l, 0) round 999px);
}

.kodza-tabs.is-live .kodza-tabs__indicator {
  transition: clip-path var(--kz-tabs-duration) var(--kz-tabs-ease);
}

.kodza-tabs__tab {
  position: relative;
  height: 36px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: none;
  color: var(--kz-tabs-muted);
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.3s ease;
}

.kodza-tabs__tab:hover {
  color: var(--kz-tabs-fg);
}

.kodza-tabs__tab[aria-selected="true"] {
  color: var(--kz-tabs-fg);
}

/* A white copy of the labels, cut to the pill: the text turns white exactly at its edges */
.kodza-tabs__mirror {
  position: absolute;
  inset: 0 auto 0 0;
  box-sizing: border-box;
  width: var(--kz-tabs-track, 100%);
  display: flex;
  padding: 4px;
  border-radius: 999px;
  color: var(--kz-tabs-on-ink);
  clip-path: inset(4px var(--kz-ind-r, 100%) 4px var(--kz-ind-l, 0) round 999px);
  pointer-events: none;
}

.kodza-tabs.is-live .kodza-tabs__mirror {
  transition: clip-path var(--kz-tabs-duration) var(--kz-tabs-ease);
}

.kodza-tabs__ghost {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}

.kodza-tabs__tab:focus-visible {
  outline: 2px solid var(--kz-tabs-fg);
  outline-offset: 2px;
}

/* --line: no pill, a line under the chosen tab */
.kodza-tabs--line .kodza-tabs__list {
  display: flex;
  gap: 4px;
  padding: 0;
  border-radius: 0;
  background: none;
  box-shadow: inset 0 -1px 0 var(--kz-tabs-border);
}

.kodza-tabs--line .kodza-tabs__indicator {
  top: auto;
  height: 2px;
  border-radius: 0;
  clip-path: inset(0 var(--kz-ind-r, 100%) 0 var(--kz-ind-l, 0));
}

.kodza-tabs--line .kodza-tabs__tab {
  height: 40px;
  padding: 0 12px;
  border-radius: 6px 6px 0 0;
}

.kodza-tabs--line .kodza-tabs__tab[aria-selected="true"] {
  color: var(--kz-tabs-fg);
}

/* The panels are stacked: the block keeps the height of the tallest one, so nothing under it
   moves. The old panel leaves on one side while the new one comes in from the side of the
   tab you picked. The column never grows past the tabs: a long line inside a panel (a code
   block) scrolls on its own instead of widening the page. */
.kodza-tabs__panels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: 20px;
}

.kodza-tabs__panel {
  grid-area: 1 / 1;
  font-size: 15px;
  line-height: 1.55;
  color: var(--kz-tabs-muted);
  text-wrap: pretty;
}

.kodza-tabs__panel p {
  margin: 0;
}

.kodza-tabs.is-ready .kodza-tabs__panel[hidden] {
  display: block;
}

.kodza-tabs.is-ready .kodza-tabs__panel {
  visibility: hidden;
  opacity: 0;
  /* A waiting panel sits a little to the side, never further than the page leaves there (a 10px
     phone gutter): it never widens the page */
  transform: translateX(calc(var(--kz-tabs-leave, -1) * min(14px, (100vw - 100%) / 2)));
  transition:
    opacity 0.2s ease,
    transform 0.3s ease-in,
    visibility 0s linear 0.3s;
}

.kodza-tabs.is-ready .kodza-tabs__panel.is-active {
  visibility: visible;
  opacity: 1;
  transform: none;
  transition:
    opacity 0.4s ease 0.14s,
    transform var(--kz-tabs-duration) var(--kz-tabs-ease) 0.14s,
    visibility 0s;
}

.kodza-tabs.is-ready .kodza-tabs__panel.is-from {
  transform: translateX(calc(var(--kz-tabs-leave, -1) * -1 * min(22px, (100vw - 100%) / 2)));
  transition: none;
}

.kodza-tabs__panel:focus-visible {
  border-radius: 6px;
  outline: 2px solid var(--kz-tabs-fg);
  outline-offset: 4px;
}


@media (prefers-reduced-motion: reduce) {
  .kodza-tabs.is-live .kodza-tabs__indicator,
  .kodza-tabs.is-live .kodza-tabs__mirror,
  .kodza-tabs__tab,
  .kodza-tabs.is-ready .kodza-tabs__panel,
  .kodza-tabs.is-ready .kodza-tabs__panel.is-active {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}

/* Theming example — on a dark background:
.dark-section .kodza-tabs {
  --kz-tabs-bg: #161616;
  --kz-tabs-fg: #f2f2f0;
  --kz-tabs-muted: rgba(242, 242, 240, 0.62);
  --kz-tabs-border: rgba(255, 255, 255, 0.12);
  --kz-tabs-ink: #f2f2f0;
  --kz-tabs-on-ink: #0a0a0a;
}
*/

/* kodza-guard e829b4517a13 — generated by Kodza, do not edit.
   Theme guard: keeps a site's own CSS (WordPress themes, Bootstrap, CSS resets…) off this
   component. :not(#_) is always true and weighs as much as an id, so these lines win over
   theme rules made of classes and tags. Customise the component through its --kz-* variables. */

/* What the browser gives, where the component sets it only in some states: at the lowest weight, so its own rules below put it back */

:where(.kodza-tabs__tab):not(#_),
:where(.kodza-tabs__panel):not(#_) {
  outline: revert;
  outline-offset: revert;
}

/* What the browser gives, on everything the component leaves to it */

.kodza-tabs:not(#_),
.kodza-tabs__indicator:not(#_),
.kodza-tabs__ghost:not(#_),
.kodza-tabs__panels:not(#_) {
  box-sizing: revert;
}

.kodza-tabs__tab:not(#_) {
  margin: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  min-height: revert;
}

.kodza-tabs__panel:not(#_) {
  box-sizing: revert;
  box-shadow: revert;
}

.kodza-tabs__panel p:where(:not([class*="kodza-"]):not(.kodza-tabs__panel [class*="kodza-"] *)):not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  color: revert;
  font-family: revert;
  font-size: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-tabs__tab:not(#_):where(:not([hidden])),
.kodza-tabs__panel p:where(:not([class*="kodza-"]):not(.kodza-tabs__panel [class*="kodza-"] *)):not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-tabs__tab:not(#_):where([hidden]),
.kodza-tabs__panel p:where(:not([class*="kodza-"]):not(.kodza-tabs__panel [class*="kodza-"] *)):not(#_):where([hidden]) {
  display: none;
}

/* The component's own rules, one step stronger: real buttons and fields, what it sets on tags themes style (links, lists, headings, images…), and the root width (a theme may narrow it, never widen it) */

.kodza-tabs:not(#_) {
  width: min(100%, var(--kz-tabs-width));
}

.kodza-tabs__tab:not(#_) {
  position: relative;
  height: 36px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: none;
  color: var(--kz-tabs-muted);
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.3s ease;
}

.kodza-tabs__tab:hover:not(#_) {
  color: var(--kz-tabs-fg);
}

.kodza-tabs__tab[aria-selected="true"]:not(#_) {
  color: var(--kz-tabs-fg);
}

.kodza-tabs__tab:focus-visible:not(#_) {
  outline: 2px solid var(--kz-tabs-fg);
  outline-offset: 2px;
}

.kodza-tabs--line .kodza-tabs__tab:not(#_) {
  height: 40px;
  padding: 0 12px;
  border-radius: 6px 6px 0 0;
}

.kodza-tabs--line .kodza-tabs__tab[aria-selected="true"]:not(#_) {
  color: var(--kz-tabs-fg);
}

.kodza-tabs__panel p:not(#_) {
  margin: 0;
}

.kodza-tabs__panel:focus-visible:not(#_) {
  outline: 2px solid var(--kz-tabs-fg);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .kodza-tabs__tab:not(#_) {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}
```

```js
// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Kodza — Tabs
// Wires the tabs to their panels (in order), slides the indicator to the chosen tab and
// handles the keyboard: arrows, Home and End move and select, as the ARIA pattern asks.
// When the tabs outgrow the row, it scrolls sideways and brings the chosen tab into view.
(() => {
  const SELECTOR = '.kodza-tabs';
  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  let uid = 0;

  // One instance. Everything it starts is tied to `signal`, so kodza:destroy stops it all
  function mount(root, signal) {
    const list = root.querySelector('.kodza-tabs__list');
    const tabs = [...root.querySelectorAll('.kodza-tabs__tab')];
    const panels = [...root.querySelectorAll('.kodza-tabs__panel')];
    if (!list || !tabs.length) return;

    // ids are made here, so the copied HTML stays free of them
    const prefix = `kodza-tabs-${++uid}`;
    tabs.forEach((tab, i) => {
      const panel = panels[i];
      if (!panel) return;
      tab.id = `${prefix}-tab-${i}`;
      panel.id = `${prefix}-panel-${i}`;
      tab.setAttribute('aria-controls', panel.id);
      panel.setAttribute('aria-labelledby', tab.id);
      panel.tabIndex = 0;
    });

    // The pill version gets a white copy of the labels, cut to the same shape as the pill
    if (!root.classList.contains('kodza-tabs--line')) {
      const mirror = document.createElement('span');
      mirror.className = 'kodza-tabs__mirror';
      mirror.setAttribute('aria-hidden', 'true');
      mirror.append(...tabs.map((tab) => {
        const ghost = document.createElement('span');
        ghost.className = 'kodza-tabs__ghost';
        ghost.textContent = tab.textContent;
        return ghost;
      }));
      list.append(mirror);
    }

    // The pill and the white copy span the whole row, scrolled part included
    const place = (tab, scroll = false) => {
      list.style.removeProperty('--kz-tabs-track');
      const track = list.scrollWidth;
      list.classList.toggle('is-scroll', track > list.clientWidth + 1);
      list.style.setProperty('--kz-tabs-track', `${track}px`);
      list.style.setProperty('--kz-ind-l', `${tab.offsetLeft}px`);
      list.style.setProperty('--kz-ind-r', `${track - tab.offsetLeft - tab.offsetWidth}px`);
      if (scroll && list.classList.contains('is-scroll')) {
        const left = tab.offsetLeft - (list.clientWidth - tab.offsetWidth) / 2;
        list.scrollTo({ left, behavior: reduceMotion ? 'auto' : 'smooth' });
      }
    };

    let current = Math.max(0, tabs.findIndex((tab) => tab.getAttribute('aria-selected') === 'true'));

    const select = (index, focus = false, first = false) => {
      const next = (index + tabs.length) % tabs.length;
      tabs.forEach((tab, i) => {
        const on = i === next;
        tab.setAttribute('aria-selected', String(on));
        tab.tabIndex = on ? 0 : -1;
      });
      // The old panel leaves on the side you come from, the new one enters from the other
      root.style.setProperty('--kz-tabs-leave', next > current ? -1 : 1);
      panels.forEach((panel, i) => {
        if (i !== next) panel.classList.remove('is-active');
      });
      const panel = panels[next];
      if (panel && (next !== current || first)) {
        if (!first) {
          panel.classList.add('is-from');
          void panel.offsetWidth;
          panel.classList.remove('is-from');
        }
        panel.classList.add('is-active');
      }
      current = next;
      place(tabs[next], !first);
      if (focus) tabs[next].focus();
    };

    tabs.forEach((tab, i) => tab.addEventListener('click', () => select(i), { signal }));
    list.addEventListener('keydown', (event) => {
      const keys = { ArrowRight: current + 1, ArrowLeft: current - 1, Home: 0, End: tabs.length - 1 };
      if (!(event.key in keys)) return;
      event.preventDefault();
      select(keys[event.key], true);
    }, { signal });
    // From here, the panels are shown by the script (stacked), not by the hidden attribute
    panels.forEach((panel) => panel.removeAttribute('hidden'));
    root.classList.add('is-ready');
    select(current, false, true);
    const observer = new ResizeObserver(() => place(tabs[current]));
    observer.observe(list);
    signal.addEventListener('abort', () => observer.disconnect());
    document.fonts?.ready.then(() => place(tabs[current]));
    // The first placement is instant; only later moves slide
    requestAnimationFrame(() => !signal.aborted && root.classList.add('is-live'));
  }

  // Kodza lifecycle, the same in every component: `kodza:init` starts the instances inside
  // event.detail.root (the whole page by default), `kodza:destroy` stops them and puts their
  // markup back. For themes and apps that swap content without a page load.
  const instances = new WeakMap();
  const find = (scope = document) => [scope, ...scope.querySelectorAll(SELECTOR)].filter((el) => el.matches?.(SELECTOR));
  const init = (scope) => find(scope).forEach((root) => {
    if (root.classList.contains('is-ready')) return; // already running, maybe from another copy of this script
    const controller = new AbortController();
    instances.set(root, { controller, html: root.innerHTML, attrs: [...root.attributes].map((a) => [a.name, a.value]) });
    mount(root, controller.signal);
    root.classList.add('is-ready');
  });
  const destroy = (scope) => find(scope).forEach((root) => {
    const instance = instances.get(root);
    if (!instance) return;
    instances.delete(root);
    instance.controller.abort();
    [...root.attributes].forEach((a) => root.removeAttribute(a.name));
    instance.attrs.forEach(([name, value]) => root.setAttribute(name, value));
    root.innerHTML = instance.html;
  });
  document.addEventListener('kodza:init', (event) => init(event.detail?.root));
  document.addEventListener('kodza:destroy', (event) => destroy(event.detail?.root));
  init();
  // Loaded in <head>, the script runs before the markup exists: once more when it is parsed
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', () => init(), { once: true });
})();
```

Free to use, from Kodza (https://kodza.dev).