# layout.dock

A bar that stays at the bottom of the screen while the content under it scrolls or changes: the now-playing bar, a cart total, a long form’s submit button on phones

Component: [`<Layout>`](https://www.prongs.dev/docs/components/layout.md) · Renders: `<footer>` · Profile: [UI](https://www.prongs.dev/docs/intents/ui.md)

## Example

```tsx
<Layout intent="layout.dock">
  …
</Layout>
```

## Choosing between neighbours

Find the row that describes your element, and use the intent on the right.

| If it is for… | Use |
|---|---|
| A bar that stays at the bottom of the screen while the content under it scrolls or changes: the now-playing bar, a cart total, a long form’s submit button on phones | `layout.dock` (this page) |
| The footer at the end of every page | [`layout.footer`](https://www.prongs.dev/docs/intents/layout/footer.md) |

## Connections

Declared in the registry, both directions. Where an intent is used in your own code is something check and the gallery see; this site has no app code.

- Built from: [`arrange.row`](https://www.prongs.dev/docs/intents/ui.md#arrange-row)

## For registry authors

**Starter intents.** These are the intents `prongs add` puts in your registry, shown in this site’s theme. Yours are your own `registry.ts`: rename, restyle and add to them, and see them with `prongs add gallery`.

What this intent is built from and its entry in `components/prongs/registry.ts`. You only need this to change how it looks or to add an intent like it.

How layout.dock resolves, and its definition

Each layer adds to the one before it; a later class wins over an earlier one that sets the same thing.

- [`arrange.row`](https://www.prongs.dev/docs/intents/ui.md#arrange-row) — Children in a wrapping row

  ```
  flex flex-row flex-wrap items-center
  ```

- `layout.dock` (this page) — A bar that stays at the bottom of the screen while the content under it scrolls or changes: the now-playing bar, a cart total, a long form’s submit button on phones

  ```
  sticky bottom-0 z-10 flex-nowrap items-center gap-4 border-t
  border-surface-border bg-background px-4 py-3
  ```

Final classes

```
flex flex-row sticky bottom-0 z-10 flex-nowrap items-center
gap-4 border-t border-surface-border bg-background px-4 py-3
```

Definition

```ts
'layout.dock': {
  kind: 'semantic',
  description: 'A bar that stays at the bottom of the screen while the content under it scrolls or changes: the now-playing bar, a cart total, a long form’s submit button on phones',
  refs: ['arrange.row'],
  binding: {
    element: 'footer',
    classes: 'sticky bottom-0 z-10 flex-nowrap items-center gap-4 border-t border-surface-border bg-background px-4 py-3',
  },
  notFor: [
    {
      context: 'the footer at the end of every page',
      instead: 'layout.footer',
    },
  ],
},
```