# Range Slider

> Real range inputs on a drawn track: a value bubble pops out of the handle, ticks darken as the fill passes, and two handles push each other instead of crossing.

Forms · range, slider, form, price · HTML, CSS, vanilla JS · no dependencies · updated 2026-10-21
Demo: https://kodza.dev/components/range-slider/

## Files

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

- [`kodza-range-slider.css`](https://kodza.dev/registry/range-slider/kodza-range-slider.css) · 11.1 KB
- [`kodza-range-slider.js`](https://kodza.dev/registry/range-slider/kodza-range-slider.js) · 5.4 KB
- [`kodza-range-slider.html`](https://kodza.dev/registry/range-slider/kodza-range-slider.html) · 0.9 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-range-slider.css https://kodza.dev/registry/range-slider/kodza-range-slider.css
curl -fsSL --create-dirs -o kodza/kodza-range-slider.js https://kodza.dev/registry/range-slider/kodza-range-slider.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-range`
- Variables (set them on the root element itself: it declares its own defaults):
  - `--kz-range-bg: #ffffff`
  - `--kz-range-fg: #0a0a0a`
  - `--kz-range-muted: rgba(10, 10, 10, 0.6)`
  - `--kz-range-rail: rgba(10, 10, 10, 0.12)`
  - `--kz-range-ink: #0a0a0a`
  - `--kz-range-on-ink: #ffffff`
  - `--kz-range-thumb: 22px`
  - `--kz-range-height: 4px`
  - `--kz-range-ease: cubic-bezier(0.22, 1, 0.36, 1)`
- Attributes:
  - `data-prefix` (e.g. `€`)
  - `data-suffix`
  - `data-ticks`
- 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 handle (focus in `.kodza-range__input`):
  - `ArrowRight` / `ArrowUp`: One step up, the other handle gets pushed along
  - `ArrowLeft` / `ArrowDown`: One step down, the other handle gets pushed along
  - `Home` / `End`: Jumps to the minimum or the maximum
  - `PageUp` / `PageDown`: A tenth of the range up or down

## 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-range {
    --kz-range-bg: #161616;
    --kz-range-fg: #f2f2f0;
    --kz-range-muted: rgba(242, 242, 240, 0.62);
    --kz-range-rail: rgba(255, 255, 255, 0.16);
    --kz-range-ink: #f2f2f0;
    --kz-range-on-ink: #0a0a0a;
  }
}
```

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

## Use it

### Plain HTML page

- CSS: `kodza/kodza-range-slider.css` next to the page (the Files commands as they are), linked in `<head>`: `<link rel="stylesheet" href="kodza/kodza-range-slider.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-range-slider.js`, loaded with `<script src="kodza/kodza-range-slider.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$/{r kodza/kodza-range-slider.css' -e 'd' -e '}' -e '/^KODZA-JS$/{r kodza/kodza-range-slider.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.
- Forms: there is nowhere to send them. Handle `submit` in your script with `event.preventDefault()` and show the result in the page.

### 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-range-slider', $uri . 'kodza-range-slider.css', [], filemtime($dir . 'kodza-range-slider.css'));
    wp_enqueue_script('kodza-range-slider', $uri . 'kodza-range-slider.js', [], filemtime($dir . 'kodza-range-slider.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-range { --kz-range-fg: var(TEXT, #0a0a0a); --kz-range-bg: var(BACKGROUND, #ffffff); --kz-range-ink: var(ACCENT, #0a0a0a); --kz-range-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-range-slider.css` and `assets/kodza-range-slider.js` (the Files commands with `-o assets/…`).
- In the section: `{{ 'kodza-range-slider.css' | asset_url | stylesheet_tag }}` and `<script src="{{ 'kodza-range-slider.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/`): `RangeSlider.tsx` (below), the CSS block under Code saved as `range-slider.css` and the JS block as `range-slider.js`, both as they are. The HTML block is already inside the component: skip it.
- Use it: `import { RangeSlider } from '@/components/kodza/RangeSlider';` then `<RangeSlider />`. Props: `prefix` (`data-prefix`: "€"), `ticks` (`data-ticks`), `vars` (the `--kz-…` variables listed under API, e.g. `vars={{ '--kz-range-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 './range-slider.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 — Range Slider, for React. From https://kodza.dev/components/range-slider/
// 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: range-slider.css and range-slider.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 './range-slider.css';

export type RangeSliderProps = Omit<ComponentPropsWithoutRef<'div'>, "children" | "vars" | "prefix" | "ticks"> & {
  /** data-prefix on the root (default: €) */
  prefix?: "€";
  /** data-ticks on the root */
  ticks?: string;
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: #ffffff */
    "--kz-range-bg"?: string | number;
    /** default: #0a0a0a */
    "--kz-range-fg"?: string | number;
    /** default: rgba(10, 10, 10, 0.6) */
    "--kz-range-muted"?: string | number;
    /** default: rgba(10, 10, 10, 0.12) */
    "--kz-range-rail"?: string | number;
    /** default: #0a0a0a */
    "--kz-range-ink"?: string | number;
    /** default: #ffffff */
    "--kz-range-on-ink"?: string | number;
    /** default: 22px */
    "--kz-range-thumb"?: string | number;
    /** default: 4px */
    "--kz-range-height"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-range-ease"?: string | number;
  };
  className?: string;
};

export function RangeSlider({ prefix = "€", ticks, vars, className, style, ...rest }: RangeSliderProps) {
  const ref = useRef<ComponentRef<'div'>>(null);
  const classes = ["kodza-range", 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, prefix, ticks, 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('./range-slider.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} data-prefix={prefix} data-ticks={ticks} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <div className="kodza-range__head">
        <span className="kodza-range__label">Budget</span>
        {' '}
        <output className="kodza-range__output" />
      </div>
      <div className="kodza-range__track">
        <input className="kodza-range__input" type="range" min="0" max="500" step="10" defaultValue="120" aria-label="Minimum budget" />
        {' '}
        <input className="kodza-range__input" type="range" min="0" max="500" step="10" defaultValue="380" aria-label="Maximum budget" />
      </div>
      <div className="kodza-range__scale" aria-hidden="true">
        <span>€0</span>
        <span>€250</span>
        <span>€500</span>
      </div>
    </div>
  );
}
```

## Code

```html
<div class="kodza-range" data-prefix="€">
  <div class="kodza-range__head">
    <span class="kodza-range__label">Budget</span>
    <output class="kodza-range__output"></output>
  </div>
  <div class="kodza-range__track">
    <input class="kodza-range__input" type="range" min="0" max="500" step="10" value="120" aria-label="Minimum budget">
    <input class="kodza-range__input" type="range" min="0" max="500" step="10" value="380" aria-label="Maximum budget">
  </div>
  <div class="kodza-range__scale" aria-hidden="true"><span>€0</span><span>€250</span><span>€500</span></div>
</div>

<div class="kodza-range" data-ticks>
  <div class="kodza-range__head">
    <span class="kodza-range__label">Volume<small>These go to eleven.</small></span>
    <output class="kodza-range__output"></output>
  </div>
  <div class="kodza-range__track">
    <input class="kodza-range__input" type="range" min="0" max="11" step="1" value="7" aria-label="Volume">
  </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 — Range Slider
   Real range inputs over a drawn track: the ink fill follows the handle, a value bubble pops out
   of the handle while you drag or use the keyboard, and the ticks (data-ticks) darken as the
   fill passes them. Put two inputs in one track for a range: the handles cannot cross, the
   first one pushes the other along. data-prefix / data-suffix dress the numbers.
   Everything is tuned with the --kz-range-* variables. */
.kodza-range {
  --kz-range-bg: #ffffff;
  --kz-range-fg: #0a0a0a;
  --kz-range-muted: rgba(10, 10, 10, 0.6);
  --kz-range-rail: rgba(10, 10, 10, 0.12);
  --kz-range-ink: #0a0a0a;
  --kz-range-on-ink: #ffffff;
  --kz-range-thumb: 22px;
  --kz-range-height: 4px;
  --kz-range-ease: cubic-bezier(0.22, 1, 0.36, 1);

  display: grid;
  gap: 14px;
  width: 100%;
  max-width: 420px;
  color: var(--kz-range-fg);
}

.kodza-range__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.kodza-range__label {
  display: grid;
  gap: 2px;
  font-size: 15px;
  font-weight: 500;
}

.kodza-range__label small {
  font-size: 13px;
  font-weight: 400;
  color: var(--kz-range-muted);
}

.kodza-range__output {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

/* The drawn track: the rail, the fill between --kz-from and --kz-to (0 to 1) */
.kodza-range__track {
  position: relative;
  height: var(--kz-range-thumb);
  margin: 22px calc(var(--kz-range-thumb) / 2) 0;
}

.kodza-range__track::before,
.kodza-range__track::after {
  content: "";
  position: absolute;
  top: 50%;
  right: calc(var(--kz-range-thumb) / -2);
  left: calc(var(--kz-range-thumb) / -2);
  height: var(--kz-range-height);
  border-radius: 999px;
  background: var(--kz-range-rail);
  transform: translateY(-50%);
}

.kodza-range__track::after {
  right: calc((1 - var(--kz-to, 0)) * 100%);
  left: calc(var(--kz-from, 0) * 100%);
  background: var(--kz-range-ink);
}

.kodza-range:not([data-dual]) .kodza-range__track::after {
  left: calc(var(--kz-range-thumb) / -2);
}

/* Keyboard focus: the rail gets a soft halo, the handle a ring */
.kodza-range__track:has(.kodza-range__input:focus-visible)::before {
  box-shadow: 0 0 0 3px var(--kz-range-rail);
}

/* The real inputs: invisible tracks, drawn thumbs */
.kodza-range__input {
  position: absolute;
  inset: 0 calc(var(--kz-range-thumb) / -2);
  z-index: 1;
  width: calc(100% + var(--kz-range-thumb));
  height: 100%;
  margin: 0;
  background: none;
  cursor: pointer;
  appearance: none;
}

.kodza-range[data-dual] .kodza-range__input {
  pointer-events: none;
}

.kodza-range__input::-webkit-slider-thumb {
  width: var(--kz-range-thumb);
  height: var(--kz-range-thumb);
  border-radius: 50%;
  background: var(--kz-range-bg);
  box-shadow: inset 0 0 0 2px var(--kz-range-ink), 0 1px 4px rgba(10, 10, 10, 0.2);
  pointer-events: auto;
  cursor: grab;
  appearance: none;
  transition: transform 0.25s var(--kz-range-ease);
}

.kodza-range__input::-moz-range-thumb {
  width: var(--kz-range-thumb);
  height: var(--kz-range-thumb);
  border: 0;
  border-radius: 50%;
  background: var(--kz-range-bg);
  box-shadow: inset 0 0 0 2px var(--kz-range-ink), 0 1px 4px rgba(10, 10, 10, 0.2);
  pointer-events: auto;
  cursor: grab;
  transition: transform 0.25s var(--kz-range-ease);
}

.kodza-range__input:active::-webkit-slider-thumb {
  cursor: grabbing;
  transform: scale(1.15);
}

.kodza-range__input:active::-moz-range-thumb {
  cursor: grabbing;
  transform: scale(1.15);
}

.kodza-range__input:focus-visible {
  outline: none;
}

.kodza-range__input:focus-visible::-webkit-slider-thumb {
  box-shadow: inset 0 0 0 2px var(--kz-range-ink), 0 0 0 4px var(--kz-range-rail);
}

.kodza-range__input:focus-visible::-moz-range-thumb {
  box-shadow: inset 0 0 0 2px var(--kz-range-ink), 0 0 0 4px var(--kz-range-rail);
}

/* The bubble: pops out of the handle while it moves */
.kodza-range__bubble {
  position: absolute;
  bottom: calc(100% + 10px);
  left: calc(var(--kz-at, 0) * 100%);
  z-index: 2;
  padding: 5px 9px;
  border-radius: 8px;
  background: var(--kz-range-ink);
  color: var(--kz-range-on-ink);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 6px) scale(0.6);
  transform-origin: 50% 100%;
  transition: opacity 0.2s ease, transform 0.3s var(--kz-range-ease);
}

.kodza-range__bubble::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  border: 4px solid transparent;
  border-top-color: var(--kz-range-ink);
  transform: translateX(-50%);
}

.kodza-range__bubble.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
  transition: opacity 0.15s ease, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Ticks: one per step, darkening as the fill passes */
.kodza-range__ticks {
  display: flex;
  justify-content: space-between;
  margin: -6px calc(var(--kz-range-thumb) / 2) 0;
}

.kodza-range__ticks span {
  width: 2px;
  height: 6px;
  border-radius: 2px;
  background: var(--kz-range-rail);
  transition: background-color 0.2s ease;
}

.kodza-range__ticks span.is-on {
  background: var(--kz-range-ink);
}

.kodza-range__scale {
  display: flex;
  justify-content: space-between;
  margin-top: -4px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 11px;
  color: var(--kz-range-muted);
}

@media (prefers-reduced-motion: reduce) {
  .kodza-range__input::-webkit-slider-thumb,
  .kodza-range__bubble,
  .kodza-range__ticks span {
    transition-duration: 0.01ms !important;
  }
}

/* Theming example — on a dark background:
.dark-section .kodza-range {
  --kz-range-bg: #161616;
  --kz-range-fg: #f2f2f0;
  --kz-range-muted: rgba(242, 242, 240, 0.62);
  --kz-range-rail: rgba(255, 255, 255, 0.16);
  --kz-range-ink: #f2f2f0;
  --kz-range-on-ink: #0a0a0a;
}
*/

/* kodza-guard 9c9041b546b3 — 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-range__input):not(#_) {
  outline: revert;
}

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

.kodza-range:not(#_),
.kodza-range__head:not(#_),
.kodza-range__label:not(#_),
.kodza-range__track:not(#_),
.kodza-range__bubble:not(#_),
.kodza-range__scale:not(#_),
.kodza-range__ticks:not(#_),
.kodza-range__scale span:where(:not([class*="kodza-"])):not(#_),
.kodza-range__ticks span:where(:not([class*="kodza-"])):not(#_) {
  box-sizing: revert;
}

.kodza-range__output:not(#_) {
  border: revert;
  margin: 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-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-range__input:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  box-shadow: revert;
  outline-offset: 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;
  white-space: revert;
  min-height: revert;
}

.kodza-range__label small:where(:not([class*="kodza-"])):not(#_) {
  border: revert;
  margin: 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;
  font-family: 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-range__output:not(#_):where(:not([hidden])),
.kodza-range__input:not(#_):where(:not([hidden])),
.kodza-range__label small:where(:not([class*="kodza-"])):not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-range__output:not(#_):where([hidden]),
.kodza-range__input:not(#_):where([hidden]),
.kodza-range__label small:where(:not([class*="kodza-"])):not(#_):where([hidden]) {
  display: none;
}

.kodza-range__track:not(#_)::before,
.kodza-range__track:not(#_)::after,
.kodza-range__input:not(#_)::before,
.kodza-range__bubble:not(#_)::after {
  box-sizing: revert;
}

/* 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-range:not(#_) {
  width: min(100%, 420px);
}

.kodza-range__label small:not(#_) {
  font-size: 13px;
  font-weight: 400;
  color: var(--kz-range-muted);
}

.kodza-range__output:not(#_) {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
}

.kodza-range__input:not(#_) {
  position: absolute;
  inset: 0 calc(var(--kz-range-thumb) / -2);
  z-index: 1;
  width: calc(100% + var(--kz-range-thumb));
  height: 100%;
  margin: 0;
  background: none;
  cursor: pointer;
  appearance: none;
}

.kodza-range[data-dual] .kodza-range__input:not(#_) {
  pointer-events: none;
}

.kodza-range__input:not(#_)::-webkit-slider-thumb {
  width: var(--kz-range-thumb);
  height: var(--kz-range-thumb);
  border-radius: 50%;
  background: var(--kz-range-bg);
  box-shadow: inset 0 0 0 2px var(--kz-range-ink), 0 1px 4px rgba(10, 10, 10, 0.2);
  pointer-events: auto;
  cursor: grab;
  appearance: none;
  transition: transform 0.25s var(--kz-range-ease);
}

.kodza-range__input:active:not(#_)::-webkit-slider-thumb {
  cursor: grabbing;
  transform: scale(1.15);
}

.kodza-range__input:focus-visible:not(#_) {
  outline: none;
}

.kodza-range__input:focus-visible:not(#_)::-webkit-slider-thumb {
  box-shadow: inset 0 0 0 2px var(--kz-range-ink), 0 0 0 4px var(--kz-range-rail);
}

@media (prefers-reduced-motion: reduce) {
  .kodza-range__input:not(#_)::-webkit-slider-thumb {
    transition-duration: 0.01ms !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 — Range Slider
// Draws the fill between the handles (or from the start), writes the value in the output and in
// a bubble over the moving handle, darkens the ticks, and keeps two handles from crossing: the
// one you move pushes the other along when they meet.
(() => {
  const SELECTOR = '.kodza-range';
  // One instance. Everything it starts is tied to `signal`, so kodza:destroy stops it all
  function mount(root, signal) {
    const track = root.querySelector('.kodza-range__track');
    const inputs = [...root.querySelectorAll('.kodza-range__input')];
    const output = root.querySelector('.kodza-range__output');
    if (!track || !inputs.length) return;
    const dual = inputs.length > 1;
    if (dual) root.setAttribute('data-dual', '');
    const prefix = root.dataset.prefix || '';
    const suffix = root.dataset.suffix || '';
    const format = (value) => `${prefix}${Number(value).toLocaleString()}${suffix}`;
    const min = Number(inputs[0].min) || 0;
    const max = Number(inputs[0].max) || 100;
    const step = Number(inputs[0].step) || 1;
    const share = (value) => (Number(value) - min) / (max - min || 1);

    // One bubble per handle
    const bubbles = inputs.map(() => {
      const bubble = document.createElement('span');
      bubble.className = 'kodza-range__bubble';
      bubble.setAttribute('aria-hidden', 'true');
      track.append(bubble);
      return bubble;
    });

    // Ticks, one per step, when asked for
    let ticks = [];
    if (root.hasAttribute('data-ticks')) {
      const box = document.createElement('div');
      box.className = 'kodza-range__ticks';
      box.setAttribute('aria-hidden', 'true');
      const count = Math.round((max - min) / step) + 1;
      ticks = Array.from({ length: count }, () => box.appendChild(document.createElement('span')));
      track.after(box);
    }

    const paint = () => {
      const values = inputs.map((input) => Number(input.value));
      const from = dual ? share(values[0]) : 0;
      const to = share(values[values.length - 1]);
      root.style.setProperty('--kz-from', from);
      root.style.setProperty('--kz-to', to);
      inputs.forEach((input, i) => {
        bubbles[i].style.setProperty('--kz-at', share(input.value));
        bubbles[i].textContent = format(input.value);
        input.setAttribute('aria-valuetext', format(input.value));
      });
      ticks.forEach((tick, i) => tick.classList.toggle('is-on', min + i * step <= values[values.length - 1] && min + i * step >= (dual ? values[0] : min)));
      if (output) output.textContent = values.map(format).join(' – ');
    };

    inputs.forEach((input, i) => {
      input.addEventListener('input', () => {
        if (dual) {
          // The handle you move pushes the other one when they meet
          const [a, b] = inputs.map((el) => Number(el.value));
          if (a > b) {
            if (i === 0) inputs[1].value = Math.min(max, a);
            else inputs[0].value = Math.max(min, b);
          }
          // The one you hold stays on top
          inputs.forEach((el) => (el.style.zIndex = el === input ? 2 : 1));
        }
        bubbles[i].classList.add('is-on');
        paint();
      }, { signal });
      const hide = () => bubbles[i].classList.remove('is-on');
      input.addEventListener('pointerup', hide, { signal });
      input.addEventListener('blur', hide, { signal });
      input.addEventListener('focus', () => input.matches(':focus-visible') && bubbles[i].classList.add('is-on'), { signal });
      input.addEventListener('pointerdown', () => bubbles[i].classList.add('is-on'), { signal });
    });
    document.addEventListener('pointerup', () => bubbles.forEach((bubble, i) => document.activeElement !== inputs[i] && bubble.classList.remove('is-on')), { signal });

    paint();
  }

  // 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).