HTML defines six levels of headings. A heading element implies all the font changes, paragraph breaks before and after, and any white space necessary to render the heading. <h> Tags are used for headings in html with a number from 1-6 inorder to tell browser the measure of the size of headings. Also, it requires closing tags </h>.
This is a companion discussion topic for the original entry at http://iq.opengenus.org/headings-in-html/