# Progress

> A bar or a ring driven by data-value: the percentage rolls like an odometer, a segment slides while nobody knows, and at 100 a tick draws itself.

Feedback & loading · progress, loading, upload, ring · HTML, CSS, vanilla JS · no dependencies · updated 2026-10-16
Demo: https://kodza.dev/components/progress-bar/

## Files

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

- [`kodza-progress-bar.css`](https://kodza.dev/registry/progress-bar/kodza-progress-bar.css) · 9.3 KB
- [`kodza-progress-bar.js`](https://kodza.dev/registry/progress-bar/kodza-progress-bar.js) · 5.4 KB
- [`kodza-progress-bar.html`](https://kodza.dev/registry/progress-bar/kodza-progress-bar.html) · 1.2 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-progress-bar.css https://kodza.dev/registry/progress-bar/kodza-progress-bar.css
curl -fsSL --create-dirs -o kodza/kodza-progress-bar.js https://kodza.dev/registry/progress-bar/kodza-progress-bar.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-progress`
- Variables (set them on the root element itself: it declares its own defaults):
  - `--kz-progress-fg: #0a0a0a`
  - `--kz-progress-muted: rgba(10, 10, 10, 0.62)`
  - `--kz-progress-track: rgba(10, 10, 10, 0.09)`
  - `--kz-progress-fill: #0a0a0a`
  - `--kz-progress-height: 6px`
  - `--kz-progress-dial: 104px`
  - `--kz-progress-ease: cubic-bezier(0.22, 1, 0.36, 1)`
- Modifiers: `.kodza-progress--ring`
- Attributes:
  - `data-done` (e.g. `hero.webp is live`, `All green`)
  - `data-value` (e.g. `0`)
- Lifecycle: `kodza:init` / `kodza:destroy` on `document`, with `{ detail: { root } }` to target a container.

## 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-progress {
    --kz-progress-fg: #f2f2f0;
    --kz-progress-muted: rgba(242, 242, 240, 0.62);
    --kz-progress-track: rgba(255, 255, 255, 0.12);
    --kz-progress-fill: #f2f2f0;
  }
}
```

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

## Use it

### Plain HTML page

- CSS: `kodza/kodza-progress-bar.css` next to the page (the Files commands as they are), linked in `<head>`: `<link rel="stylesheet" href="kodza/kodza-progress-bar.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-progress-bar.js`, loaded with `<script src="kodza/kodza-progress-bar.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$/{r kodza/kodza-progress-bar.css' -e 'd' -e '}' -e '/^KODZA-JS$/{r kodza/kodza-progress-bar.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-progress-bar', $uri . 'kodza-progress-bar.css', [], filemtime($dir . 'kodza-progress-bar.css'));
    wp_enqueue_script('kodza-progress-bar', $uri . 'kodza-progress-bar.js', [], filemtime($dir . 'kodza-progress-bar.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-progress { --kz-progress-fg: var(TEXT, #0a0a0a); --kz-progress-fill: var(ACCENT, #0a0a0a); }`
  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-progress-bar.css` and `assets/kodza-progress-bar.js` (the Files commands with `-o assets/…`).
- In the section: `{{ 'kodza-progress-bar.css' | asset_url | stylesheet_tag }}` and `<script src="{{ 'kodza-progress-bar.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/`): `Progress.tsx` (below), the CSS block under Code saved as `progress-bar.css` and the JS block as `progress-bar.js`, both as they are. The HTML block is already inside the component: skip it.
- Use it: `import { Progress } from '@/components/kodza/Progress';` then `<Progress />`. Props: `variant` ("ring", or several in an array), `value` (`data-value`: "0"), `done` (`data-done`: "hero.webp is live", "All green"), `vars` (the `--kz-…` variables listed under API, e.g. `vars={{ '--kz-progress-fg': … }}`), `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 './progress-bar.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 — Progress, for React. From https://kodza.dev/components/progress-bar/
// 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: progress-bar.css and progress-bar.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 './progress-bar.css';

type Variant = "ring";

export type ProgressProps = Omit<ComponentPropsWithoutRef<'div'>, "children" | "variant" | "vars" | "value" | "done"> & {
  /** Modifier class(es): .kodza-progress--ring */
  variant?: Variant | Variant[];
  /** data-value on the root (default: 0) */
  value?: "0";
  /** data-done on the root (default: hero.webp is live) */
  done?: "hero.webp is live" | "All green";
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: #0a0a0a */
    "--kz-progress-fg"?: string | number;
    /** default: rgba(10, 10, 10, 0.62) */
    "--kz-progress-muted"?: string | number;
    /** default: rgba(10, 10, 10, 0.09) */
    "--kz-progress-track"?: string | number;
    /** default: #0a0a0a */
    "--kz-progress-fill"?: string | number;
    /** default: 6px */
    "--kz-progress-height"?: string | number;
    /** default: 104px */
    "--kz-progress-dial"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-progress-ease"?: string | number;
  };
  className?: string;
};

export function Progress({ variant, value = "0", done = "hero.webp is live", vars, className, style, ...rest }: ProgressProps) {
  const ref = useRef<ComponentRef<'div'>>(null);
  const classes = ["kodza-progress", ...([] as string[]).concat(variant ?? []).map((v) => `kodza-progress--${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, value, done, 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('./progress-bar.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 role="progressbar" aria-label="Uploading hero.webp" key={key} {...rest} className={classes} data-value={value} data-done={done} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <div className="kodza-progress__head">
        <span className="kodza-progress__label">Uploading hero.webp</span>
        {' '}
        <span className="kodza-progress__value">0%</span>
      </div>
      <div className="kodza-progress__track">
        <span className="kodza-progress__fill" />
      </div>
    </div>
  );
}
```

## Code

```html
<div class="kodza-progress" role="progressbar" aria-label="Uploading hero.webp" data-value="0" data-done="hero.webp is live">
  <div class="kodza-progress__head">
    <span class="kodza-progress__label">Uploading hero.webp</span>
    <span class="kodza-progress__value">0%</span>
  </div>
  <div class="kodza-progress__track"><span class="kodza-progress__fill"></span></div>
</div>

<div class="kodza-progress" role="progressbar" aria-label="Waiting for a CI runner">
  <div class="kodza-progress__head">
    <span class="kodza-progress__label">Waiting for a CI runner</span>
    <span class="kodza-progress__value"></span>
  </div>
  <div class="kodza-progress__track"><span class="kodza-progress__fill"></span></div>
</div>

<div class="kodza-progress kodza-progress--ring" role="progressbar" aria-label="Tests passing" data-value="0" data-done="All green">
  <div class="kodza-progress__dial">
    <svg class="kodza-progress__ring" viewBox="0 0 48 48" aria-hidden="true"><circle cx="24" cy="24" r="21" /><circle cx="24" cy="24" r="21" pathLength="100" /></svg>
    <span class="kodza-progress__value">0%</span>
  </div>
  <span class="kodza-progress__label">Tests passing</span>
</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 — Progress
   A bar or a ring, driven by data-value (0–100; leave it out for "we don't know yet"). The
   percentage rolls digit by digit like an odometer; at 100 it gives way to a tick that draws
   itself, and the label rolls to data-done if you set one. Without a value, a segment slides
   along the bar (or an arc turns around the ring). Change data-value from your code, the
   component follows. Everything is tuned with the --kz-progress-* variables. */
.kodza-progress {
  --kz-progress-fg: #0a0a0a;
  --kz-progress-muted: rgba(10, 10, 10, 0.62);
  --kz-progress-track: rgba(10, 10, 10, 0.09);
  --kz-progress-fill: #0a0a0a;
  --kz-progress-height: 6px;
  --kz-progress-dial: 104px;
  --kz-progress-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --kz-progress-v: 0;

  display: grid;
  gap: 12px;
  color: var(--kz-progress-fg);
  font-size: 15px;
  line-height: 1.3;
}

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

/* The label, and the words it rolls to once done (one cell: the layout never moves) */
.kodza-progress__label {
  display: inline-grid;
  min-width: 0;
  overflow: hidden;
  padding-block: 0.12em;
  margin-block: -0.12em;
  font-weight: 500;
}

.kodza-progress__label > span {
  grid-area: 1 / 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: transform 0.55s var(--kz-progress-ease), opacity 0.3s ease;
}

.kodza-progress__label > span:nth-child(2) {
  opacity: 0;
  transform: translateY(105%);
}

.kodza-progress.is-complete .kodza-progress__label > span:first-child {
  opacity: 0;
  transform: translateY(-105%);
}

.kodza-progress.is-complete .kodza-progress__label > span:nth-child(2) {
  opacity: 1;
  transform: none;
  transition-delay: 0.1s;
}

/* The value: rolling digits, then a tick */
.kodza-progress__value {
  display: inline-grid;
  justify-items: end;
  overflow: hidden;
  padding-block: 0.12em;
  margin-block: -0.12em;
  color: var(--kz-progress-muted);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.kodza-progress__value > * {
  display: inline-flex;
  grid-area: 1 / 1;
  align-items: center;
  transition: transform 0.55s var(--kz-progress-ease), opacity 0.3s ease;
}

.kodza-progress__digit {
  display: inline-block;
  height: 1.3em;
  overflow: hidden;
  line-height: 1.3;
}

.kodza-progress__digit.is-off {
  width: 0;
  opacity: 0;
}

.kodza-progress__digit > span {
  display: block;
  transform: translateY(calc(var(--kz-progress-d, 0) * -10%));
  transition: transform 0.5s var(--kz-progress-ease);
}

.kodza-progress__digit > span > span {
  display: block;
  height: 1.3em;
}

.kodza-progress__tick {
  color: var(--kz-progress-fg);
  opacity: 0;
  transform: translateY(105%);
}

.kodza-progress__tick svg {
  width: 1.1em;
  height: 1.1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.kodza-progress__tick path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 0.2s ease;
}

.kodza-progress.is-complete .kodza-progress__number {
  opacity: 0;
  transform: translateY(-105%);
}

.kodza-progress.is-complete .kodza-progress__tick {
  opacity: 1;
  transform: none;
  transition-delay: 0.1s;
}

.kodza-progress.is-complete .kodza-progress__tick path {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.4s var(--kz-progress-ease) 0.18s;
}

.kodza-progress.is-indeterminate .kodza-progress__value {
  visibility: hidden;
}

/* The bar: a full-width fill slid in from the left, so its rounded end keeps its shape */
.kodza-progress__track {
  position: relative;
  height: var(--kz-progress-height);
  overflow: hidden;
  border-radius: 999px;
  background: var(--kz-progress-track);
}

.kodza-progress__fill {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--kz-progress-fill);
  transform: translateX(calc((var(--kz-progress-v) - 100) * 1%));
  transition: transform 0.6s var(--kz-progress-ease);
}

.kodza-progress.is-indeterminate .kodza-progress__fill {
  right: auto;
  width: 38%;
  transform: translateX(-100%);
  transition: none;
  animation: kodza-progress-slide 1.5s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes kodza-progress-slide {
  to {
    transform: translateX(265%);
  }
}

/* The ring: the value in the middle, the label below */
.kodza-progress--ring {
  justify-items: center;
  gap: 14px;
}

.kodza-progress__dial {
  display: grid;
  place-items: center;
  width: var(--kz-progress-dial);
  height: var(--kz-progress-dial);
}

.kodza-progress__dial > * {
  grid-area: 1 / 1;
}

.kodza-progress__ring {
  width: 100%;
  height: 100%;
  overflow: visible;
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  transform: rotate(-90deg);
}

.kodza-progress__ring circle:first-child {
  stroke: var(--kz-progress-track);
}

.kodza-progress__ring circle:last-child {
  stroke: var(--kz-progress-fill);
  stroke-dasharray: var(--kz-progress-v) 100;
  transition: stroke-dasharray 0.6s var(--kz-progress-ease), opacity 0.2s ease;
}

.kodza-progress[data-value="0"] .kodza-progress__ring circle:last-child {
  opacity: 0;
}

.kodza-progress--ring .kodza-progress__value {
  justify-items: center;
  color: var(--kz-progress-fg);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.kodza-progress--ring .kodza-progress__tick svg {
  width: 30px;
  height: 30px;
  stroke-width: 1.6;
}

.kodza-progress--ring .kodza-progress__label {
  color: var(--kz-progress-muted);
  font-size: 14px;
}

.kodza-progress--ring .kodza-progress__label > span {
  justify-self: center;
}

.kodza-progress--ring.is-indeterminate .kodza-progress__ring {
  animation: kodza-progress-turn 1.4s linear infinite;
}

.kodza-progress--ring.is-indeterminate .kodza-progress__ring circle:last-child {
  stroke-dasharray: 28 100;
  opacity: 1;
}

@keyframes kodza-progress-turn {
  to {
    transform: rotate(270deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-progress *,
  .kodza-progress__value > * {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }

  .kodza-progress.is-indeterminate .kodza-progress__fill,
  .kodza-progress--ring.is-indeterminate .kodza-progress__ring {
    animation: none;
  }

  .kodza-progress.is-indeterminate .kodza-progress__fill {
    transform: translateX(80%);
  }
}

/* Theming example — on a dark background:
.dark-section .kodza-progress {
  --kz-progress-fg: #f2f2f0;
  --kz-progress-muted: rgba(242, 242, 240, 0.62);
  --kz-progress-track: rgba(255, 255, 255, 0.12);
  --kz-progress-fill: #f2f2f0;
}
*/

/* kodza-guard c0f0bf4d362f — 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-progress__ring):not(#_),
:where(.kodza-progress__tick svg:where(:not([class*="kodza-"]))):not(#_) {
  transition-duration: revert;
  transition-delay: revert;
}

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

.kodza-progress:not(#_),
.kodza-progress__head:not(#_),
.kodza-progress__label:not(#_),
.kodza-progress__value:not(#_),
.kodza-progress__number:not(#_),
.kodza-progress__digit:not(#_),
.kodza-progress__tick:not(#_),
.kodza-progress__track:not(#_),
.kodza-progress__fill:not(#_),
.kodza-progress__dial:not(#_),
.kodza-progress__label span:where(:not([class*="kodza-"])):not(#_),
.kodza-progress__digit span:where(:not([class*="kodza-"])):not(#_) {
  box-sizing: revert;
}

.kodza-progress__ring:not(#_),
.kodza-progress__tick svg:where(:not([class*="kodza-"])):not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: 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;
  transition-property: revert;
  transition-timing-function: revert;
}

.kodza-progress__ring:not(#_):where(:not([hidden])),
.kodza-progress__tick svg:where(:not([class*="kodza-"])):not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-progress__ring:not(#_):where([hidden]),
.kodza-progress__tick svg:where(:not([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) */

@media (prefers-reduced-motion: reduce) {
  .kodza-progress *:where(svg):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 — Progress
// Follows data-value (0–100, or none for indeterminate): fills the bar or the ring, rolls the
// digits of the percentage, keeps aria-valuenow in step, and marks .is-complete at 100.
// From your code: el.dataset.value = 42 (or el.removeAttribute('data-value')).
(() => {
  const SELECTOR = '.kodza-progress';
  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  const ease = 'cubic-bezier(0.22, 1, 0.36, 1)';
  const make = (tag, className) => Object.assign(document.createElement(tag), className ? { className } : {});

  // One instance. Everything it starts is tied to `signal`, so kodza:destroy stops it all
  function mount(root, signal) {
    const value = root.querySelector('.kodza-progress__value');
    const label = root.querySelector('.kodza-progress__label');
    if (!value) return;
    root.setAttribute('aria-valuemin', '0');
    root.setAttribute('aria-valuemax', '100');

    // The percentage: three columns of digits (0 to 9, stacked) and a tick for the end
    const number = make('span', 'kodza-progress__number');
    const columns = [0, 1, 2].map(() => {
      const column = make('span', 'kodza-progress__digit');
      const strip = make('span');
      for (let d = 0; d < 10; d++) strip.append(Object.assign(make('span'), { textContent: d }));
      column.append(strip);
      return column;
    });
    number.append(...columns, '%');
    const tick = make('span', 'kodza-progress__tick');
    tick.innerHTML = '<svg viewBox="0 0 16 16"><path d="M3.5 8.4l2.9 2.8 6.1-6.4" pathLength="1"/></svg>';
    value.replaceChildren(number, tick);
    value.setAttribute('aria-hidden', 'true');

    // The words it rolls to once done
    if (label && root.dataset.done) {
      const now = Object.assign(make('span'), { textContent: label.textContent.trim() });
      const done = Object.assign(make('span'), { textContent: root.dataset.done });
      label.replaceChildren(now, done);
    }

    let settle = 0;
    const render = (first) => {
      const raw = root.getAttribute('data-value');
      const unknown = raw === null || raw === '' || Number.isNaN(parseFloat(raw));
      root.classList.toggle('is-indeterminate', unknown);
      if (unknown) {
        root.removeAttribute('aria-valuenow');
        clearTimeout(settle);
        root.classList.remove('is-complete');
        return;
      }
      const v = Math.round(Math.min(100, Math.max(0, parseFloat(raw))));
      root.style.setProperty('--kz-progress-v', v);
      root.setAttribute('aria-valuenow', v);
      const digits = String(v).padStart(3, ' ');
      columns.forEach((column, i) => {
        const on = digits[i] !== ' ';
        column.style.setProperty('--kz-progress-d', on ? digits[i] : 0);
        if (on === !column.classList.contains('is-off')) return;
        // A column that comes or goes eases its width: the number never jumps
        const from = column.offsetWidth;
        column.classList.toggle('is-off', !on);
        const to = column.offsetWidth;
        if (!first && !reduceMotion) column.animate([{ width: `${from}px` }, { width: `${to}px` }], { duration: 450, easing: ease });
      });
      // 100% lands first, then gives way to the tick
      clearTimeout(settle);
      if (v < 100) root.classList.remove('is-complete');
      else if (first || reduceMotion) root.classList.add('is-complete');
      else settle = setTimeout(() => root.classList.add('is-complete'), 550);
    };

    render(true);
    const observer = new MutationObserver(() => render(false));
    observer.observe(root, { attributes: true, attributeFilter: ['data-value'] });
    signal.addEventListener('abort', () => {
      observer.disconnect();
      clearTimeout(settle);
    });
  }

  // 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).