sites/cozylan/template_overrides/layout/_navigation.html
<nav class="nav-main">
<ol>
{%- for item in get_nav_menu_items('main') %}
<li><a class="nav-main-item{% if item.current_page_id == current_page %} current{% endif %}" href="{{ item.target }}">{{ item.label }}</a></li>
{%- endfor %}
</ol>
</nav>