                    <!-- Brand and toggle get grouped for better mobile display -->
                            <header class="navbar-header">
                    
                                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse">
                                    <span class="sr-only">Toggle navigation</span>
                                    <span class="icon-bar"></span>
                                    <span class="icon-bar"></sp