1bit.pw/templates/partials/site-nav.html

<nav class="site-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
    <ul class="menu main-menu">
    {% for item in config.extra.main_menu %}
        <li>
            <a itemprop="url"
                class="{% if macros::is_active_nav(url=macros::link(url=item.url), curr_url=current_url) == "true" %}active{% endif %}"
                href="{{ macros::link(url=item.url) }}">
                <span itemprop="name">{{ item.name }}</span>
            </a>
        </li>
    {% endfor %}
    </ul>
    {% for item in config.extra.main_menu %}
        {% if item.sub and current_url is starting_with(macros::link(url=item.url)) %}
            <ul class="menu sub-menu">
                {% for sub_item in item.sub %}
                    <li>
                        <a
                            itemprop="url"
                            href="{{ macros::link(url=sub_item.url) }}"
                            {%- if macros::link(url=sub_item.url) == current_url %} class="active" {% endif -%}
                            >
                                <span itemprop="name">{{ sub_item.name }}</span>
                        </a>
                    </li>
                {% endfor %}
            </ul>
        {% endif %}
    {% endfor %}
</nav>