_nav.html

<nav id="top-nav" class="navbar navbar-default navbar-fixed-top" role="navigation">
  <div class="container">
    {# Brand and toggle get grouped for better mobile display #}
    <div 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"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="./">{{ title }}</a>
    </div>

    {# Collect the nav links, forms, and other content for toggling #}
    <div class="collapse navbar-collapse navbar-ex1-collapse">

      {# The actual main navbar elements #}
      <ul class="nav navbar-nav">
        {% for section in sections %}
        <li>
        <a href="{{ nav_prefix }}#{{ section.id }}">
            {{ section.title }}
          </a>
          <ul class="subnav">
          {% for slide in slides %}
            {% if slide.section_id == section.id and slide.in_nav %}
            <li class="{{ 'active' if slide.id == slides[0].id }}"><a class="slide-circle" title="{{ slide.title }}" href="{{ nav_prefix }}#{{ slide.id }}"><span>{{ slide.title }}</span></a></li>
            {% endif %}
          {% endfor %}
          </ul>
        </li>
        {% endfor %}

        <li><a href="about.html">About</a></li>
      </ul>
      <ul class="social-menu nav navbar-nav navbar-right">
          {% if opengraph_description and opengraph_image %}
          <li>
              <a target="_blank" href="https://www.facebook.com/sharer.php?u={{ ROOT_URL }}/{{ PATH }}&t={{ title|urlencode }}">
                  <i class="icon-white icon-facebook-sign"></i> <span class="hidden">Facebook</span>
              </a>
          </li>
          {% endif %}
          {% if twitter_description %}
          <li>
              <a target="_blank" href="https://twitter.com/share?url={{ ROOT_URL }}/{{ PATH }}&text={{ twitter_description|urlencode }}">
                  <i class="icon-white icon-twitter-sign"></i> <span class="hidden">Twitter</span>
              </a>
          </li>
          {% endif %}
          {% if opengraph_description and opengraph_image %}
          <li>
              <a target="_blank" href="https://plus.google.com/share?url={{ ROOT_URL }}/{{ PATH }}">
                  <i class="icon-white icon-google-plus-sign"></i> <span class="hidden">Google+</span>
              </a>
          </li>
          {% endif %}
          {% if opengraph_description and opengraph_image %}
          <li>
              <a target="_blank" href="http://pinterest.com/pin/create/button/?url={{ ROOT_URL }}/{{ PATH }}&media={{ opengraph_image }}&description={{ opengraph_description|urlencode }}" class="pin-it-button" count-layout="horizontal">
                  <i class="icon-white icon-pinterest-sign"></i> <span class="hidden">Pinterest</span>
              </a>
          </li>
          {% endif %}
      </ul>

    </div>{# /.navbar-collapse #}
  </div>
</nav>