Styled <p> elements must not be used as headings
Moderatep-as-heading
What it checks
Ensure bold, italic text and font-size is not used to style <p> elements as a heading
How to fix it
Review and fix this accessibility issue following WCAG guidelines
WCAG
Success criteria 1.3.1. See the WCAG 2.2 quick reference.
More detail: Deque University's page on this rule.