示例
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">WebSite Title</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="#">Home</a></li>
<li><a href="#">About">About</a></li>
<li><a asp-controller="Home" asp-action="Contact">Contact</a></li>
<!--- vvv Create a submenu in the navbar vvv --->
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Testing Stuff <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">SubItem</a></li>
<li><a href="#">Something Sub-y</a></li>
</ul>
</li>
<!--- ^^^ Create a submenu in the navbar ^^^ --->
</ul>
</div>
</div>
</div>
