HTML provides six levels of headings. Usage of these headings helps us in ensuring a uniform look and feel for the document. We can format our pages with different levels of header tags. Various levels of headings are H1, H2 .... H6.
<H1> ... </H1>:
This is the first level of heading offered by HTML. This heading is most important when compared to other levels and this heading is the highest - level of headings. This tag inserts a line break before and after the text enclosed with in these two tags. Text enclosed between <H1> and </H1> will be displayed as below.
Level 1 Heading
<H2> ... </H2>:
This is the second level of heading provided by HTML. Text enclosed between <H2> and </H2> will be displayed as below.
Level 2 Heading
<H3> ... </H3>:
This is the third level of heading provided by HTML. Text enclosed between <H3> and </H3> will be displayed as below.
Level 3 Heading
<H4> ... </H4>:
This is the forth level of heading provided by HTML. Text enclosed between <H4> and </H4> will be displayed as below.
Level 4 Heading
<H5> ... </H5>:
This is the fifth level of heading provided by HTML. Text enclosed between <H5> and </H5> will be displayed as below.
Level 5 Heading
<H6> ... </H6>:
This is the sixth level of heading provided by HTML. Text enclosed between <H6> and </H6> will be displayed as below.
Level 6 Heading
Note: H1 tag is mainly used for main headings and mostly it is used once in a page. H2 to H6 can be used as many times as required.