Illuminate the expanded dropdown menu in a Bootstrap 5 navbar

Bootstrap 5 navbar allows for the creation of dropdown menus.

Is there a way to highlight the current menu item when a dropdown is opened, similar to how it's done in Windows desktop applications? This feature is not provided by Bootstrap 5:

https://i.sstatic.net/jwImh.png

How can we make Dropdown2's background either lighter or darker, or provide some other visual indication when its dropdown is open?

Navbar

<nav class="navbar navbar-expand-lg">
  <div class="container-fluid">
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Dropdown1
          </a>
          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
            <li><a class="dropdown-item" href="#"><u>A</u>ction</a></li>
            <li><a class="dropdown-item" href="#">A<u>n</u>other action</a></li>
            <li><hr class="dropdown-divider"></li>
            <li><a class="dropdown-item" href="#"><u>S</u>omething else here</a></li>
          </ul>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Dropdown2
          </a>
          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
            <li><a class="dropdown-item" href="#"><u>A</u>ction</a></li>
            <li><a class="dropdown-item" href="#">A<u>n</u>other action</a></li>
            <li><hr class="dropdown-divider"></li>
            <li><a class="dropdown-item" href="#"><u>S</u>omething else here</a></li>
          </ul>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Dropdown3
          </a>
          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
            <li><a class="dropdown-item" href="#"><u>A</u>ction</a></li>
            <li><a class="dropdown-item" href="#">A<u>n</u>other action</a></li>
            <li><hr class="dropdown-divider"></li>
            <li><a class="dropdown-item" href="#"><u>S</u>omething else here</a></li>
          </ul>
        </li>
      </ul>
    </div>
  </div>
</nav>

The test case can be viewed at

Bootstrap 5 and ASP.NET 6 MVC are being used with the latest version of jQuery installed.

htmljquerycsstwitter-bootstrapnavbar

Answer №1

Upon clicking, the dropdown automatically adds a .show class, allowing you to utilize this selector and specify a style:

.nav-link.dropdown-toggle.show{
    background:orange;
}

view result

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