# Box

> A panel or region with layout options and token-based surface or color-reference fill. One token contract, every theme. Catalog id box.

Language: en
Canonical: https://texuli.com/component-pages/box/
Markdown: https://texuli.com/component-pages/box.md (this page). Every texuli.com page has a Markdown twin at its URL plus `.md` (the home page is https://texuli.com/index.md), and any page URL answers `Accept: text/markdown` with its twin instead of HTML.
Last Updated: 2026-11-13

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[Components](https://texuli.com/component-pages/) Box

display texuli not agent-emittable app

`box`

A panel or region with layout options and token-based surface or color-reference fill.

**One token contract, every theme.** Display components take color, radius, density and state styling from the --tx-* token contract — the same variables the theme strip below overrides — so a theme swap re-colors them without per-component fixes.

## Live examples

### Bordered panel

### Bordered panel

Loading demo…

### Muted region

### Muted region

### App header (no card chrome)

### App header (no card chrome)

### Brand logo tile

### Brand logo tile

### Page canvas

### Page canvas

### Translucent sticky header

### Translucent sticky header

### Dashed panel

### Dashed panel

## In your theme

This page renders in the site theme, `enterprise-neutral`. Every one of the **210** library themes re-colors every component through the `--tx-*` contract. The three below carry real token values from the library, rendered at build — no island, no extra requests.

- Violetlight mode · AA contrast`background`
- `surface`
- `primary`
- `accent`
- `border`

[Open Theme Studio](https://texuli.com/theme-studio/)
- Monochromelight mode · AA contrast`background`
- `surface`
- `primary`
- `accent`
- `border`

[Open Theme Studio](https://texuli.com/theme-studio/)
- Accessible Dark Contrastdark mode · AAA contrast`background`
- `surface`
- `primary`
- `accent`
- `border`

[Open Theme Studio](https://texuli.com/theme-studio/)

## Props

Public props for Box

| Name | Kind | Required | Default | Description |
| --- | --- | --- | --- | --- |
| `as` | `enum` (div, section, article, aside, header, footer) | no | `"div"` | — |
| `padding` | `enum` (none, sm, md, lg, xl) | no | `"md"` | — |
| `radius` | `enum` (none, sm, md, lg, xl, full) | no | `"md"` | — |
| `border` | `enum` (none, default, strong, block-start, block-end, inline-start, inline-end, dashed) | no | `"none"` | All sides, one logical side (block-start, block-end, inline-start, inline-end), or dashed |
| `elevation` | `enum` (none, sm, md, lg) | no | `"none"` | — |
| `surface` | `enum` (transparent, default, muted, subtle, elevated, canvas, primary, brand, success, warning, destructive, info, primary-soft, translucent) | no | `"transparent"` | The surface (the variant axis): primary is solid, the semantic tones and primary-soft use soft token fills with AA ink, and translucent is glass for sticky headers |
| `fill` | `enum` (none, chart-1, chart-2, chart-3, chart-4, chart-5, chart-6, chart-7, chart-8, primary, secondary, success, warning, destructive, info, neutral) | no | `"none"` | Optional closed token reference (chart-1 through chart-8 or a semantic color role); never a CSS color or arbitrary value |
| `class` | `string` | no | — | — |
| `children` | `slot` | no | — | The panel content |

## Keyboard

Keyboard behavior for Box

| Key | Action |
| --- | --- |
| `a` | Not interactive. Use as="section" or "aside" with a heading for a landmark-like region. |

## Accessibility

- Not interactive. Use as="section" or "aside" with a heading for a landmark-like region.

## Evidence for box

Latest committed gates for `box` (as of 2026-10-23). Static snapshot — not live CI.

### Behavior

n/a no behavior scenario

No dedicated behavior scenario for this catalog id (a styled or display surface, covered by its unit and axe tests).

### Size (gzip)

`texuli/box · budget 12.0 KiB`

Budget from texuli.budgets.json; re-measure with `pnpm size --filter <entry>`.

### Axe

documented

- `tests/e2e/site-component-pages.spec.ts`
- `docs/quality (a11y-*)`

Site component pages axe gate; package-level a11y docs under docs/quality when present.

### Browsers

- `chromium`
- `webkit`
- `mobile`

Playwright projects: Desktop Chrome, Desktop Safari, Pixel 7. Firefox is a known gap on this host.

## When to use

### Use when

- Frame a group of content as a bordered or filled panel
- Space and surface a region in a locked prototype, where visual utilities are refused

### Don’t use when

Prefer another component

- A clickable surface (use card with href)
- Page layout (use a layout)

## Related

- [`card`](https://texuli.com/component-pages/card/)
- [`heading`](https://texuli.com/component-pages/heading/)
- [`text`](https://texuli.com/component-pages/text/)

## For agents

The live preview, prop editor and copyable code run in the browser. The component manifest holds the same props, events, examples and guidance as data. The live parts run in the browser and are not in this Markdown; the operations below do the same work through the read-only MCP server at https://texuli.com/mcp (no sign-in; see https://texuli.com/auth.md).

MCP operations ([reference](https://github.com/DailybotHQ/texuli/blob/main/packages/tools/docs/ops.md#operations)):

- `component.get`: Read a component manifest with `{"id":"box"}`.
- `example.search`: Find component examples.
- `catalog.search`: Search the component catalog.

Docs:

- [box component doc (Markdown)](https://texuli.com/llms/components/box.md)
- [Component docs for agents (llms.txt)](https://texuli.com/llms/llms.txt)
- [Catalog manifest snapshot (JSON)](https://texuli.com/catalog/catalog.json)
- [texuli README](https://github.com/DailybotHQ/texuli/blob/main/packages/texuli/README.md)
- [@texuli/catalog README](https://github.com/DailybotHQ/texuli/blob/main/packages/catalog/README.md)