<nav class="nav nav-tabs">
  <a class="nav-link active" aria-current="page" href="#">Home</a>
  <a class="nav-link" href="#">About us</a>
  <a class="nav-link" href="#">Contact us</a>
</nav>

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css

External JavaScript

This Pen doesn't use any external JavaScript resources.