<header>

<nav class="navbar navbar-default navbar-inverse">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#header-collapse" aria-expanded="false">
        <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 class="collapse navbar-collapse" id="header-collapse">
      <ul class="nav navbar-nav navbar-right">
        <li><a href="{{ 'docs' | relative_url }}">Docs</a></li>
        <li><a href="{{ 'about' | relative_url }}">About</a></li>
        <li><a href="{{ 'contact' | relative_url }}">Contact</a></li>
      </ul>
    </div>
  </div>
</nav>

</header>