Heading Tag:

Heading tag is used to give the heading or sub headings to your web page. Size of the text will depend upon the heading tag used.
For example : h1 tag will show text in large and bold whereas h2 will display text smaller than h1 tag and so on till h6 tag which is smallest of all.

EXAMPLE:

OUTPUT:

h1 defines most important heading and h6 defines least important heading.