gistfile1.html

    <div class="navbar-wrapper">
      <div class="container">
        <div class="navbar navbar-inverse">
          <div class="navbar-inner">
            <a class="brand" href="/"> Chewing </a>
            <ul class="nav">
{% for item in site.navigation %}
  {% assign active = nil %}
  {% if page.class == item.class %}
    {% assign active = ' class="active"' %}
  {% endif %}
              <li{{ active }}><a href="{{ item.url }}">{{ item.text }}</a></li>
{% endfor %}
            </ul>
          </div>
        </div>
      </div>
    </div>