v class="navbar navbar-default navbar-fixed-top" role="navigation">        <div class="navbar-header">          <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse-0">          <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="#">Brand</a>        <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse-0">