<linkrel="stylesheet"href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"> <body> <divclass="w3-container"> <h2>Navigation Bar with Dropdown</h2> <p><strong>Note:</stron
<ul class="nav nav-pills nav-stacked"> <li class="active"><a href="#">Home</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#">Menu 1 <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#">Submenu 1-1...