Header tag (h1-h6 tag)

Header tags are a great way to help increase your search engine rankings. If you are creating a page about "best seo tutorial" and want to rank for this page, there's nothing shady at all about including a nice big <h1>best seo tutorial</h1> at the top of the page to make sure your users and the search engines know what your page's subject is. However, as with other
search engine strategies, it is important not to stuff too many keywords into these tags. A good rule of thumb is to include no more than 3 or 4 <h1> tags per page, and always have at least a paragraph or two of text between your header tags.
A page that consists entirely of header tags looks pretty spammy to search engines, and it isn't very useful to your visitors.
                                                                                                                                       Rashedul