**Hello I follow the tutorial Landing Page with Bootstrap 5 & Material Design 2.0 (MDB 5 tutorial) (https://www.youtube.com/watch?v=EvnLvZykfwM). Here I used mdb libs from tutorial: version 1.0.0 beta free: mdb.bin.js and mdb.bin.css and works well: in mobile mode emulator or on mobile device navbar button appear top right and I can extend the menu ****When I try the next tutorial for MDB pro version I download last version of MDB (3.10.2) and replace all js and css original files with the new ones. Result: navbar button doesn't appear to mobile emulator or mobile itself so I cannot extend the menu to mobile version. **** 0.My code is:

 <nav class="navbar navbar-expand-lg navbar-dark bg-black">
  <div class="container">
    <a class="navbar-brand" href="#">Steak House</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup"
      aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
      <ul class="navbar-nav mr-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#about">About</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#book">Book</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#team">Team</a>
        </li>
      </ul>
    </div>
  </div>
</nav>

1. Capture from first project with 1.0.0 version
2. Capture from second project (same code) with 3.10.2 pro version

Thank you, **