HTML Heading Command Syntax:

The form of the basic HTML heading command is very simple: 

<hn>(Heading text goes here)</hn>

where n = the size of the heading text in the range from 1 (the largest) to 6 (the smallest). 

Examples:

<h1>This is Heading One (1)</h1>

This is heading One (1)

and so on -

This is heading Two (2)

This is heading Three (3)

This is heading Four (4)

This is heading Five (5)

This is heading Six (6)

HTML Heading Alignment:

Headings can be placed on the page using the align=left, =right or =center parameter. 

Examples:

<h5 align=right>Heading 5 Aligned Right</h5>

Heading 5 Aligned Right

and so on -

Heading 5 Aligned Center

Heading 5 Aligned left