<nav class=“site-nav”>

{% assign sorted_pages = site.pages | sort: "position" %}
{% for _page in sorted_pages %}
{% if _page.navbar_title or _page.navtitle or _page.navlevel == "header" or _page.navbar %}
<a class="page-link" href="{{ _page.url | relative_url }}" >{{ _page.navbar_title | default: _page.navtitle | default: _page.title | escape }}</a>
{% endif %}
{% endfor %}

</nav>