<nav class="navbar navbar-expand-lg navbar-light bg-light">

  <a class="navbar-brand" href="">Navbar</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>

    </ul>

  </div>

</nav>