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How can I create a responsive navbar that collapses into a hamburger menu on smaller screens?

Asked on May 03, 2026

Answer

To create a responsive navbar that collapses into a hamburger menu on smaller screens, you can use Bootstrap's built-in classes and components. This approach allows you to leverage Bootstrap's responsive utilities to manage the navbar's behavior across different screen sizes.
<!-- BEGIN COPY / PASTE -->
    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
      <a class="navbar-brand" href="#">Brand</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-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 active">
            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></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>
          <li class="nav-item">
            <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
          </li>
        </ul>
      </div>
    </nav>
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.3/dist/umd/popper.min.js"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
    <!-- END COPY / PASTE -->
Additional Comment:
  • The "navbar-expand-lg" class ensures the navbar expands on large screens and collapses on smaller ones.
  • The "navbar-toggler" button triggers the collapse functionality, showing the hamburger icon on smaller screens.
  • Ensure to include Bootstrap's CSS and JS files, as well as jQuery and Popper.js for the collapse functionality to work.
  • Customize the navbar by adding or removing list items and changing the "navbar-brand" text.
✅ Answered with CSS best practices.

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