Why the <header> tag is used ?

Answer 1

https://www.w3schools.com/tags/tag_header.asp
HTML header Tag - W3Schools

Answer 2

<header> tag is a semantic element and it is not necessary to use, this tag is mainly used for defining header contents.

Answer 3

header tag defines a header for a section or a page

Answer 4

HTML5 <header> element .the <header>element specifies a header for a document or section.the <header> element should be used as a container for introductory content. you can use several <header> elements in one document.

Answer 5

Header consists header section of a webpage

Answer 6

to define header contents