Section

Only used when there is no `title` and no `Section.Title`: the title, when present, names the region.

What sits beside the actions on the header row, to their left. Equivalent to `Section.Aside`.

The body. A `Section.Header` among the children replaces the header built from `title`, `description`, `aside` and `actions`; a `Section.Footer` replaces `footer` (ADR-111).

Maximum width of the inner rail; the band still spans the full width.

A rule inside the rail, so it does not cross the band from edge to edge of the screen.

What renders in place of the content when `isEmpty`. Without `isEmpty` it never renders.

Replaces the content. A string is wrapped in an error `Alert` that announces itself.

The glass band of ADR-082, the lowest step. Use it ALTERNATING sections: turning it on everywhere gives you a uniform background, which is the opposite of the effect.

Turns on the `empty` branch. `error` wins over it: with an error, the empty state does not render.

Lays the loading veil over the content WITHOUT removing it, so the page does not jump when it ends.

Heading level of the title, 2 to 6. Structure, not size: the size is `fz`.

Reveal on entering the viewport. Swaps the root element for the motion one, it does not add a node (see `Reveal.md`).

Names the region through `aria-labelledby`, which is why it beats `aria-label`. Without it, and without a `Section.Title` among the children, the band falls back to `aria-label`.