anchor.diff:  
     <body>
   
  -    <nav class="navbar navbar-default">
  +    <nav class="navbar navbar-inverse">
         <div class="container-fluid">
           <!-- Brand and toggle get grouped for better mobile display -->
           <div class="navbar-header">
  
positive.code:             <span class="icon-bar"></span>
              <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">Brand</a>
          </div>
  
          <!-- Collect the nav links, forms, and other content for toggling -->
          <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
              <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>
              <li><a href="#">Link</a></li>
              <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                <ul class="dropdown-menu">
                  <li><a href="#">Action</a></li>
  
negative.code:                 <li role="separator" class="divider"></li>
                  <li><a href="#">One more separated link</a></li>
                </ul>
              </li> -->
            </ul>
          </div><!-- /.navbar-collapse -->
        </div><!-- /.container-fluid -->
  