pigallery2/frontend/app/frame/frame.component.html

<nav class="navbar navbar-inverse navbar-static-top">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
                    aria-expanded="false" aria-controls="navbar">
                <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="#"><img src="icon_inv.png" style="max-height: 26px; display: inline;"/> PiGallery2</a>
        </div>
        <div id="navbar" class="collapse navbar-collapse">
            <ul class="nav navbar-nav">
                <li class="active"><a [routerLink]="['Gallery',{directory: '/'}]">Gallery</a></li>
                <li><a [routerLink]="['Admin']">Admin</a></li>
            </ul>
        </div><!--/.nav-collapse -->
    </div>
</nav>
<ng-content></ng-content>