<footer>
Closing content for the page or any article/section: authorship, related links, legal fine print.
Baseline: Widely available · Sectioning & landmarks
When to use it
As the page contentinfo landmark (direct child of body, one only) or scoped per article for attribution.
When not to
Contact info inside it belongs in an address element, not bare paragraphs.
Example
<footer>
<p><small>© 2026 Field Guide. Licensed CC BY 4.0.</small></p>
</footer>