# Collapsible

Single disclosure region with panel and plain presentations and measured-height animation.

Choose Collapsible for one optional region. Use the default panel variant for a standalone surface. Use `plain` inside an existing surface.

## API

The package declarations define these public members.

| Member | Type | Kind | Required | Default | Description |
| --- | --- | --- | --- | --- | --- |
| `children` | `Snippet` | snippet | Yes | - | No additional description. |
| `disabled` | `boolean` | prop | No | `false` | No additional description. |
| `label` | `string` | prop | No | `undefined` | No additional description. |
| `onOpenChange` | `(open: boolean) => void` | callback | No | `undefined` | No additional description. |
| `open` | `boolean` | binding | No | `false` | Two-way open state. |
| `trigger` | `Snippet` | snippet | No | `undefined` | Replaces the default label and caret row. |
| `variant` | `CollapsibleVariant` | prop | No | `'panel'` | No additional description. |

## Related

- [Provider](/docs/components/provider): Installs theme variables, utility CSS, scope boundaries, and overlay portal context.
- [Accordion](/docs/components/accordion): Single or multiple disclosure panels.
- [Section](/docs/components/section): Top-level showcase or document section frame.