Text & Semantic Elements

HTML has six heading levels, <h1> (most important) through <h6> (least):

<h1>World News</h1> <h2>Europe</h2> <h3>Economy</h3>

Headings form the outline of a page. Use one <h1> for the page's main topic, then <h2> for sections and <h3> for subsections — don't skip levels, and never pick a heading just because of its size. Screen readers and search engines use this outline to understand and navigate the page.