<nav>
A major navigation block: primary menu, table of contents, breadcrumbs, pagination.
Baseline: Widely available · Sectioning & landmarks
When to use it
For navigation users will want to jump to; when a page has several, distinguish them with aria-label (Primary, Breadcrumb, Pagination).
When not to
Not every group of links is a nav — a list of footer links or in-prose links usually isn't.
Key attributes
aria-label- distinguishes multiple navs
Example
<nav aria-label='Primary'>
<ul>
<li><a href='/' aria-current='page'>Home</a></li>
<li><a href='/tags/'>Tags</a></li>
</ul>
</nav>