Exercise:

Fill in the missing blanks to create a navigation bar that should become vertical on small screens:

<nav class="
w3exercise_input_no_0
 
w3exercise_input_no_1
 bg-light">
  <div class="container-fluid">
    <ul class="
w3exercise_input_no_2
">
      <li class="nav-item">
        <a class="nav-link" href="#">Link 1</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link 2</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link 3</a>
      </li>
    </ul>
  </div>
</nav>