<nav>
All Tags not showing in online page, but show on view source.
<nav> <a href="#">Home</a> | <a href="#">About Us</a> | <a href="#">Contact Us</a> </nav>
Code show like this:
Browser Support
The <nav> tag is not supported in Internet Explorer 8 and earlier versions.
What is nav tag
nav tag means navigation. nav tag used to navigation linke in header like home, about us, contact us.
HTML5
nav tag is new in html5.