# Separator

> Lines that draw themselves from their middle when they come into view: a plain rule, one with a label or a section title, one around a CSS dot, and verticals between items.

Data display · separator, divider, rule, hr · HTML, CSS, vanilla JS · no dependencies · updated 2026-10-16
Demo: https://kodza.dev/components/separator/

## Files

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

- [`kodza-separator.css`](https://kodza.dev/registry/separator/kodza-separator.css) · 5.6 KB
- [`kodza-separator.js`](https://kodza.dev/registry/separator/kodza-separator.js) · 3.0 KB
- [`kodza-separator.html`](https://kodza.dev/registry/separator/kodza-separator.html) · 0.8 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-separator.css https://kodza.dev/registry/separator/kodza-separator.css
curl -fsSL --create-dirs -o kodza/kodza-separator.js https://kodza.dev/registry/separator/kodza-separator.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-separator`
- Variables (set them on the root element itself: it declares its own defaults):
  - `--kz-separator-line: rgba(10, 10, 10, 0.16)`
  - `--kz-separator-fg: #0a0a0a`
  - `--kz-separator-muted: rgba(10, 10, 10, 0.6)`
  - `--kz-separator-ease: cubic-bezier(0.65, 0, 0.35, 1)`
  - `--kz-separator-duration: 0.9s`
- Modifiers: `.kodza-separator--dot`, `.kodza-separator--label`, `.kodza-separator--start`, `.kodza-separator--vertical`
- 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-separator,
  .kodza-separator-row {
    --kz-separator-line: rgba(255, 255, 255, 0.18);
    --kz-separator-fg: #f2f2f0;
    --kz-separator-muted: rgba(242, 242, 240, 0.6);
  }
}
```

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

## Use it

### Plain HTML page

- CSS: `kodza/kodza-separator.css` next to the page (the Files commands as they are), linked in `<head>`: `<link rel="stylesheet" href="kodza/kodza-separator.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-separator.js`, loaded with `<script src="kodza/kodza-separator.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$/{r kodza/kodza-separator.css' -e 'd' -e '}' -e '/^KODZA-JS$/{r kodza/kodza-separator.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-separator', $uri . 'kodza-separator.css', [], filemtime($dir . 'kodza-separator.css'));
    wp_enqueue_script('kodza-separator', $uri . 'kodza-separator.js', [], filemtime($dir . 'kodza-separator.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-separator { --kz-separator-fg: var(TEXT, #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-separator.css` and `assets/kodza-separator.js` (the Files commands with `-o assets/…`).
- In the section: `{{ 'kodza-separator.css' | asset_url | stylesheet_tag }}` and `<script src="{{ 'kodza-separator.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/`): `Separator.tsx` (below), the CSS block under Code saved as `separator.css` and the JS block as `separator.js`, both as they are. The HTML block is already inside the component: skip it.
- Use it: `import { Separator } from '@/components/kodza/Separator';` then `<Separator>02 — Install</Separator>`. Props: `variant` ("dot", "label", "start", "vertical", or several in an array), `vars` (the `--kz-…` variables listed under API, e.g. `vars={{ '--kz-separator-line': … }}`), `children` (the text, plain), `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 './separator.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 — Separator, for React. From https://kodza.dev/components/separator/
// 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: separator.css and separator.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 './separator.css';

type Variant = "dot" | "label" | "start" | "vertical";

export type SeparatorProps = Omit<ComponentPropsWithoutRef<'div'>, "children" | "variant" | "vars"> & {
  /** Modifier class(es): .kodza-separator--dot, .kodza-separator--label, .kodza-separator--start, .kodza-separator--vertical */
  variant?: Variant | Variant[];
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: rgba(10, 10, 10, 0.16) */
    "--kz-separator-line"?: string | number;
    /** default: #0a0a0a */
    "--kz-separator-fg"?: string | number;
    /** default: rgba(10, 10, 10, 0.6) */
    "--kz-separator-muted"?: string | number;
    /** default: cubic-bezier(0.65, 0, 0.35, 1) */
    "--kz-separator-ease"?: string | number;
    /** default: 0.9s */
    "--kz-separator-duration"?: string | number;
  };
  /** The text, plain: the script reads it and rebuilds the markup around it */
  children?: string;
  className?: string;
};

export function Separator({ variant, vars, children = "02 — Install", className, style, ...rest }: SeparatorProps) {
  const ref = useRef<ComponentRef<'div'>>(null);
  const classes = ["kodza-separator", "kodza-separator--label", "kodza-separator--start", ...([] as string[]).concat(variant ?? []).map((v) => `kodza-separator--${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, children, 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('./separator.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="separator" key={key} {...rest} className={classes} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <span>{children}</span>
    </div>
  );
}
```

## Code

```html
<div class="kodza-separator kodza-separator--label kodza-separator--start" role="separator"><span>02 — Install</span></div>

<hr class="kodza-separator" />

<div class="kodza-separator kodza-separator--label" role="separator"><span>or</span></div>

<div class="kodza-separator kodza-separator--dot" role="separator"></div>

<p class="kodza-separator-row">
  <span>v2.0.1</span>
  <span class="kodza-separator kodza-separator--vertical" role="separator" aria-orientation="vertical"></span>
  <span>MIT</span>
  <span class="kodza-separator kodza-separator--vertical" role="separator" aria-orientation="vertical"></span>
  <span>0 dependencies</span>
  <span class="kodza-separator kodza-separator--vertical" role="separator" aria-orientation="vertical"></span>
  <span>2.1 KB</span>
</p>
```

```css
/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Separator
   A line that draws itself from its middle (or from its label) when it comes into view. A plain
   rule (an hr), --label ("or", or a section title with --start), --dot (a round in the middle)
   and --vertical, between items of a .kodza-separator-row. Without the script, the lines are
   simply there. "kodza:replay" draws one again.
   Everything is tuned with the --kz-separator-* variables. */
.kodza-separator,
.kodza-separator-row {
  --kz-separator-line: rgba(10, 10, 10, 0.16);
  --kz-separator-fg: #0a0a0a;
  --kz-separator-muted: rgba(10, 10, 10, 0.6);
  --kz-separator-ease: cubic-bezier(0.65, 0, 0.35, 1);
  --kz-separator-duration: 0.9s;
}

/* The plain rule */
hr.kodza-separator {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--kz-separator-line);
  transition: transform var(--kz-separator-duration) var(--kz-separator-ease);
}

/* Label and dot: two lines either side of something */
.kodza-separator--label,
.kodza-separator--dot {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--kz-separator-muted);
  font-size: 13px;
}

.kodza-separator--label::before,
.kodza-separator--label::after,
.kodza-separator--dot::before,
.kodza-separator--dot::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--kz-separator-line);
  transition: transform var(--kz-separator-duration) var(--kz-separator-ease);
}

/* Each line grows away from the middle */
.kodza-separator--label::before,
.kodza-separator--dot::before {
  transform-origin: 100% 50%;
}

.kodza-separator--label::after,
.kodza-separator--dot::after {
  transform-origin: 0 50%;
}

.kodza-separator--label > span {
  transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* A section title: the label on the left, one line after it, in mono */
.kodza-separator--start::before {
  display: none;
}

.kodza-separator--start > span {
  color: var(--kz-separator-fg);
  font-family: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  letter-spacing: 0.02em;
}

/* The dot: a small round drawn in CSS */
.kodza-separator--dot {
  gap: 18px;
}

.kodza-separator--dot {
  background: radial-gradient(circle, var(--kz-separator-fg) 2.5px, transparent 3px) center / 6px 6px no-repeat;
}

/* Vertical, between items on a line */
.kodza-separator-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 0;
  color: var(--kz-separator-muted);
  font-size: 14px;
}

.kodza-separator--vertical {
  display: inline-block;
  width: 1px;
  height: 14px;
  background: var(--kz-separator-line);
  transition: transform var(--kz-separator-duration) var(--kz-separator-ease);
}

/* Waiting to be drawn (only once the script is there) */
hr.kodza-separator.is-ready:not(.is-drawn) {
  transform: scaleX(0);
}

.kodza-separator.is-ready:not(.is-drawn)::before,
.kodza-separator.is-ready:not(.is-drawn)::after {
  transform: scaleX(0);
}

.kodza-separator--label.is-ready:not(.is-drawn) > span {
  opacity: 0;
  transform: translateY(6px);
}

.kodza-separator--vertical.is-ready:not(.is-drawn) {
  transform: scaleY(0);
}

/* Reset at once before drawing again */
.kodza-separator.is-resetting,
.kodza-separator.is-resetting::before,
.kodza-separator.is-resetting::after,
.kodza-separator.is-resetting > span {
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  .kodza-separator,
  .kodza-separator::before,
  .kodza-separator::after,
  .kodza-separator > span {
    transition: none !important;
  }
}

/* Theming example — on a dark background:
.dark-section .kodza-separator,
.dark-section .kodza-separator-row {
  --kz-separator-line: rgba(255, 255, 255, 0.18);
  --kz-separator-fg: #f2f2f0;
  --kz-separator-muted: rgba(242, 242, 240, 0.6);
}
*/

/* kodza-guard ba8e8c173b3a — 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-separator):not(#_) {
  border: revert;
}

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

.kodza-separator:not(#_) {
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  position: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-height: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-separator span:where(:not([class*="kodza-"])):not(#_) {
  box-sizing: revert;
}

.kodza-separator:not(#_)::before,
.kodza-separator: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) */

hr.kodza-separator:not(#_) {
  border: 0;
  background: var(--kz-separator-line);
  transition: transform var(--kz-separator-duration) var(--kz-separator-ease);
}

.kodza-separator.is-resetting:where(hr):not(#_) {
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  .kodza-separator:where(hr):not(#_) {
    transition: none !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 — Separator
// Draws each line when it comes into view (verticals in a row one after the other), and again
// on "kodza:replay".
(() => {
  const SELECTOR = '.kodza-separator';
  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

  const draw = (el) => {
    el.classList.add('is-resetting');
    el.classList.remove('is-drawn');
    void el.offsetWidth;
    el.classList.remove('is-resetting');
    // Verticals in a row: one after the other
    const row = el.closest('.kodza-separator-row');
    const index = row ? [...row.querySelectorAll('.kodza-separator')].indexOf(el) : 0;
    el.style.transitionDelay = row ? `${index * 90}ms` : '';
    el.classList.add('is-drawn');
  };

  // One instance. Everything it starts is tied to `signal`, so kodza:destroy stops it all
  function mount(el, signal) {
    el.addEventListener('kodza:replay', () => draw(el), { signal });
    if (!('IntersectionObserver' in window) || reduceMotion) return el.classList.add('is-drawn');
    const io = new IntersectionObserver(([entry]) => {
      if (!entry.isIntersecting) return;
      io.disconnect();
      draw(entry.target);
    }, { threshold: 0, rootMargin: '0px 0px -12% 0px' });
    io.observe(el);
    signal.addEventListener('abort', () => io.disconnect());
  }

  // 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).