Bootstrap 5 Navbar: Quickly Implement a Responsive Navigation Menu

This article introduces methods to quickly implement a responsive navigation menu using Bootstrap 5. First, the CSS and JS files of Bootstrap 5 need to be introduced via CDN. The basic structure includes the `<nav>` tag with the `.navbar` class. Core components consist of the brand logo (`.navbar-brand`), navigation container (`.navbar-nav`), navigation items (`.nav-item`), links (`.nav-link`), toggle button (`.navbar-toggler`), and collapsible content (`.collapse.navbar-collapse`), with sample code provided. Responsive collapse logic is controlled by the `.navbar-expand-*` class, such as `.navbar-expand-lg` which expands the menu on large screens (≥992px) and automatically collapses it into a hamburger menu on smaller screens. Style customization supports background colors (`bg-*`), text colors (`.navbar-dark/light`), active states (`.active`), and dropdown menus (`.dropdown-*`). Extended features include fixed-top positioning (`.fixed-top`), right-side content (e.g., search boxes), and spacing adjustments. Notes: Ensure the correct CDN order, match the `data-bs-target` of the toggle button with the content ID, and add accessibility attributes to enhance compatibility. With these methods, a responsive navigation can be quickly implemented without additional CSS.