main

The element for a page’s primary content — the part that is unique to this page, not the navigation, header or footer repeated on every page — exactly one visible per document, the target of a skip link, and the main landmark a screen reader jumps to first

The most consequential landmark and the one frameworks most often forget: a shell that renders the page inside a <div> leaves every route’s content outside any landmark, and axe’s region rule fires on every render. That is exactly what this site’s layouts fixed — Nuxt UI’s dashboard panel renders a plain <div>, so the layouts add the <main> themselves and the comment says why. One per page; if there seem to be two, one of them is a <section>.