Help with Bootstrap 3

Hey all, I relatively new to coding in HTML and CSS (1 week experience) and trying to build my own personal website right now. What exactly does “navbar-header” do in Bootstrap?

navbar-header makes a header that resides inside your navbar just like in this forum you can see that FCC logo and name is present inside the navbar.

it just a container that holds your logo and menu

It’s part of the navbar actually.