The HTML <header> Element represents a group of introductory or navigational aids. It may contain some heading elements but also other elements like a logo, wrapped section's header, a search form, and so on.

Usage note:
The <header> element is not sectioning content and therefore doesn't introduce a new section in the outline.

Content categories:
Flow content, palpable content.

Permitted content:
Flow content, but with no <header> or <footer> descendant.

Tag omission:
None, both the starting and ending tag are mandatory.

Permitted parent elements:
Any element that accepts flow content. Note that a <header> element must not be a descendant of an <address>, <footer> or another <header> element..

DOM interface:
HTMLElement
