About Lesson							
															Navigation with Dropdowns
- .dropdown → Wrapper for dropdown menu
 - .dropdown-toggle → Makes the link a dropdown trigger
 - .dropdown-menu → Creates the dropdown list
 - .dropdown-item → Defines individual dropdown items
 
Example: Nav with Dropdown
HTML
<ul class="nav nav-pills">
  <li class="nav-item">
    <a class="nav-link active" href="#">Home</a>
  </li>
  <li class="nav-item dropdown">
    <a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="#">Services</a>
    <ul class="dropdown-menu">
      <li><a class="dropdown-item" href="#">Web Design</a></li>
      <li><a class="dropdown-item" href="#">SEO</a></li>
    </ul>
  </li>
</ul>
Output:

Explanation:
- Dropdown menu added inside .nav-pills.
 - .dropdown-toggle enables dropdown trigger.