<nav class="navbar navbar-inverse navbar-fixed-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="{{ site.url }}">{{ site.title }}</a>
        </div>

        <div id="navbar" class="collapse navbar-collapse">
            <ul class="nav navbar-nav">
                <li{% if page.nav == 'about' %} class="active"{% endif %}><a href="{{ site.url }}">About</a></li>
                {% for item in [ 'work', 'services', 'talks', 'blog', 'contact' ] %}
                    <li{% if page.nav == item %} class="active"{% endif %}><a href="{{ site.url }}/{{ item }}">{{ item|title }}</a></li>
                {% endfor %}
            </ul>
        </div>{# .nav-collapse #}
    </div>
</nav>