<header class=“site-header” role=“banner”>

<div class=“wrapper”>

<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.shorttitle}}</a>
  </div>
  {% assign site_categories = site.posts | map: 'categories' | compact | uniq  %}  
  <div id="navbar" class="navbar-collapse collapse">
    <ul class="nav navbar-nav">         
      {%- for category in site_categories %}
      <li class="dropdown">
        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">{{ category }}</a>
        {%- assign subposts = site.posts | where: "categories", category %}
        <ul class="dropdown-menu">
          {%- for post in subposts %}  
          <li><a href="{{ post.url }}">{{ post.title }}</a></li>
          {%- endfor %}   
        </ul>
      </li>
      {%- endfor %}  
      {% for page in site.pages | compact %}
          {%- if page.title != nil -%}
      <li><a href="{{page.url}}">{{page.title}}</a></li>
          {%- endif -%}
      {% endfor %} 
    </ul>
  </div><!--/.navbar-collapse -->
</div>

</nav>

</div> </header>