In HTML there are about six headings that start in html from <h1> ... and end at <h6>. Each heading of the HTML displays a different size. <h1> displays the largest heading size whereas <h6> displays least heading size.
For example: -
<h1> this is </h1>
<h2> this is </h2>
<h3> this is </h3>
<h4> this is </h4>
<h5> this is </h5>
<h6> this is </h6>
Output
