What are Heading Tags / Elements (H1, H2, H3, H4, H5, H6)?
The heading element in HTML defines a structure for headings in a document. Starting with H1 as the most important heading, descending to H6, heading tags have been a standard part of HTML since HTML 2.0.
Example:
<h1>Heading text</h1>
<h2>Heading text</h2>
<h3>Heading text</h3>
<h4>Heading text</h4>
<h5>Heading text</h5>
<h6>Heading text</h6>