Navigation Bar Basics Bootstrap 4 navbar is a structure that can extend or collapse depending on screen size and neatly style the navigation links in your website. Use classic Bootstrap navbar as sidebar, on left or right side. To generate buttons for Twitter's Bootstrap 3 use this generator. A Bootstrap 4 example navbar with a logo as the navbar brand - created by Start Bootstrap. Sub-menu. By Abhishek Parmar. Choose from fixed to the top, fixed to the bottom, or stickied to the top (scrolls with the page until it … This is usually used … Bootstrap 4 navigation bar with icons in nav-tabs. HTML Code Code: Bootstrap Collapse Navbar