[Solved] My code dont works but I don’t know why [closed]

by


Change the data-target to the correct element id. In your case #bs-example-navbar-collapse-1 is the element id you want:

 <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false" aria-controls="navbar">

solved My code dont works but I don’t know why [closed]