Bootstrap provides a powerful and responsive navigation header called the navbar, which includes support for branding, navigation, and more. It's designed to be responsive and is easily customizable with Bootstrap's utility classes.

Basic Structure of a Bootstrap Navbar

To create a basic navbar with Bootstrap, you need to start with a <nav> element with a .navbar class, and typically a .navbar-expand{-sm|-md|-lg|-xl} class to determine when the navbar should collapse on smaller screens. The navbar requires a wrapping element to handle the responsive behavior, which is controlled by Bootstrap's collapse JavaScript plugin.

Here's a simple example of a Bootstrap navbar that collapses at the 'lg' breakpoint: