The header following an h4 is h1, h2, h3, h4 or h5¶
Severity code: Information only
The header following an <code>h4 element should either be an <code>h5, <code>h3, <code>h2, <code>h1, or another <code>h4.
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.