landmark-contentinfo-is-top-level

Contentinfo landmark must be top-level

Checks that the contentinfo landmark (role="contentinfo" or a non-nested <footer>) is not nested inside another landmark region.

Applies to. Applies whenever the page contains at least one contentinfo candidate: explicit role="contentinfo", OR a <footer> with NO role attribute at all, regardless of nesting (see implementation notes on why candidate selection is unconditional on purpose).

Expectation. No contentinfo candidate has an ancestor that is itself any landmark region. A contentinfo nested inside another landmark is not a top-level, whole-page footer region and confuses landmark-based navigation for assistive technology users.

Examples

<div role="navigation">
  <div role="contentinfo">Nested contentinfo</div>
</div>

<footer>Site footer</footer>

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