NAV Element in HTML5
The nav element represents a section of a document that links to other documents or to parts within the document itself. It’s a section of navigational links.
It’s intended for major navigational information like a sitewide navigation bar or a subsection menu. It’s important to realize that not every group of links belongs inside the nav element.
The nav tag should typically be placed inside the header element and again it’s meant for major navigational information.