<header class=“site-header”>

<nav class="navbar navbar-default light-grey">
  <div class="container-fluid">
    <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">Navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>

      <a href="/">
        <img src="{{ site.url }}/assets/img/logo.png" height="65">
      </a>
    </div>

    <div id="navbar" class="collapse navbar-collapse">
        <ul class="nav navbar-nav">
          <li class="dropdown">
            <a aria-expanded="false" aria-haspopup="true" class="dropdown-toggle" data-toggle="dropdown" href="#" role="button">
              Welcome <span class="caret"></span>
            </a>
          </li>
          <li><a href="#">A link</a></li>
          <li><a href="#">Another link</a></li>
        </ul>
      <form class="navbar-form navbar-right" action="https://google.com/search" method="get" role="search">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="Search term">
          <input type="hidden" name="q" value="site:{{ site.url | host_from_url }}" />
        </div>
        <button type="submit" class="btn btn-default">Submit</button>
      </form>
    </div><!--/.nav-collapse -->
  </div>
</nav>

</header>