<header class='header'>

<nav class="navbar sticky-top navbar-expand-lg navbar-light">
        <div class="container"><!-- remove this container class for a full width nav bar -->
                <a class="navbar-brand" href="{{ '/' | relative_url }}">{{ site.title | escape }}</a>
                {% if site.pages.size > 0 %}
                  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
                    <span class="navbar-toggler-icon"></span>
                  </button>
                  <div class="collapse navbar-collapse" id="navbarNav">
                    <div class="navbar-nav ml-auto">
                                {% for page in site.pages %}
                                      {% if page.title and page.name != "404.md" %}
                                        <li>
                                                <a class="nav-item nav-link" href="{{ page.url | relative_url }}">{{ page.title | escape }}</a>
                                        </li>
                                      {% endif %}
                                    {% endfor %}
                    </div>
                  </div>
                {% endif %}
        </div>
</nav>

</header>