Twitter Bootstrap 2.3.2

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
            <div class="container">
                <div class="navbar-header">
                    <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                    </button>
                    <a class="navbar-brand" href="#">BRAND</a>
                </div>
                <div class="navbar-header  navbar-right">
                    <ul class="nav navbar-nav">
                          <li>
                            <a href="#">Fixed Link</a>
                          </li>
                    </ul>
                </div>
                <div class="navbar-collapse collapse">
            
                    <ul class="nav navbar-nav">
                         <li><a href="#">L1</a></li>
                        <li><a href=#">L2</a></li>
                    </ul>
                    
                </div>
                
            </div>
    </nav>