CodexBloom - Programming Q&A Platform

Responsive Navbar Not Collapsing on Mobile in Bootstrap 5 - Seeking guide

👀 Views: 16 💬 Answers: 1 📅 Created: 2025-06-11
html css bootstrap navbar responsive HTML

Quick question that's been bugging me - I’m having trouble with a responsive navbar using Bootstrap 5... The navbar simply won’t collapse into a hamburger menu when viewed on mobile devices. I’ve ensured that I included the required Bootstrap CSS and JS files, but the toggle functionality is not working as expected. Here’s the relevant code: ```html <nav class="navbar navbar-expand-lg navbar-light bg-light"> <a class="navbar-brand" href="#">Brand</a> <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarNav"> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link active" aria-current="page" href="#">Home</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Features</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Pricing</a> </li> </ul> </div> </nav> ``` I also confirmed that I'm using Bootstrap 5.1.3 and included the following scripts before the closing body tag: ```html <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.min.js"></script> ``` However, when I resize the browser window or view it on mobile, the navbar doesn’t collapse as it should. Instead, it displays all links regardless of the screen size. I tried checking for JavaScript errors in the console, but nothing seems to be wrong there. I also made sure that the navbar classes are correctly applied according to the documentation, but it’s still not functioning. Any insights would be greatly appreciated! Any ideas what could be causing this?