What is a Header Tag
<h1></h1> <h2></h2> <h3></h3> <h4></h4> <h5></h5> <h6></h6> the header tags are html tags. Anything written between <> and </> will be seen by the browser. However the tag needs to be styled with css.
It is a generic container.
The div tag <h1></h1> tag is generally coded in the in a file with the extention .html