The header following an h3 is h1, h2, h3 or h4ΒΆ

Severity code: Information only

The header following an <code>h3 element should either be an <code>h4, <code>h2, <code>h1 or another <code>h3.

Users of screen readers often use headers to make sense of the structure of the document, and having headers in the right order can be very helpful. It also helps the document itself to be consistently structured.