How to implement modern underline navbar tabs with Bootstrap 5.3?

March 18, 2026

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Bootstrap 5.3 provides the .nav-underline utility to create modern underline-style navigation. When applied to a .navbar-nav or .nav container, it automatically displays an underline for the active .nav-link using the current theme color. Combined with responsive navbar utilities, it delivers a clean, contemporary tab-style navigation without custom CSS or JavaScript.

Example:-

Code


<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link
      href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css"
      rel="stylesheet"
    />
  </head>
  <body>
    <nav class="navbar navbar-expand-lg bg-light">
      <div class="container">
        <a class="navbar-brand" href="#">Brand</a>

        <button
          class="navbar-toggler"
          data-bs-toggle="collapse"
          data-bs-target="#navbarNav"
        >
          <span class="navbar-toggler-icon"></span>
        </button>

        <div class="collapse navbar-collapse" id="navbarNav">
          <ul class="navbar-nav nav-underline w-100 justify-content-center">
            <li class="nav-item">
              <a class="nav-link active" href="#">Home</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">About</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">Services</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">Contact</a>
            </li>
          </ul>
        </div>
      </div>
    </nav>

    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>
  </body>
</html>

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