Paragraphs must not be used for headers¶
Severity code: Severe error
Headers like <code>h1-h6 are extremely useful for non-sighted users to navigate the structure of the page, and formatting a paragraph to just be big or bold, while it might visually look like a header, does not make it one.
<p><strong>Something that really should be a header</strong></p>
<h3>Something that really should be a header</h3>