The page header is the section at the top of the page which appears above the content area. It may include things like a logo, the page, site or course name, navigation menus and breadcrumbs. The term Header should not be confused with the term Heading (h1 to h7 in HTML) which is summary text that can appear at the beginning of each section of the page.
Hyper Text Markup Language is the standard markup language, called tags, for all web pages. These tags are the building blocks for an HTML page.