box
The padded section card, and the heading that sits outside it.
rst-list and rst-card have no padding by design: they hold a run of rows, and each row pads itself. Put a form, a paragraph, a strip of links or anything else that is not a row straight into one and it renders flush against the border — the text touching the edge is the tell. The padded card for arbitrary content is rst-box, with its heading as a sibling rst-box-head before it.
<div rst-box-head><h2>Payout</h2><a rst-btn href="/payout/edit">Edit</a></div>
<section rst-box><p>Everything on a screen sits inside boxes.</p><div rst-box-foot>Last updated 2 hours ago</div></section>