A set of navigation links:
The <nav> tag defines a set of navigation links.
Notice that NOT all links of a document should be inside a <nav> element. The <nav> element is intended only for major block of navigation links.
Browsers, such as screen readers for disabled users, can use this element to determine whether to omit the initial rendering of this content.
The numbers in the table specify the first browser version that fully supports the element.
The <nav> tag is new in HTML5.
The <nav> tag also supports the Global Attributes in HTML.
The <nav> tag also supports the Event Attributes in HTML.
HTML DOM reference: Nav Object
Most browsers will display the <nav> element with the following default values: