qwik-cms/content/components/toc.njk

{% macro header(size, text) %}
    {% append "toc" %}
        <a href="#{{ text | replace(" ", "-") }}" class="toc-{{ size }}">{{ text }}</a>
    {% endappend %}

    <a name="{{ text | replace(" ", "-") }}"></a>
    <{{ size }}>
        {{ text }}
    </{{ size }}>
{% endmacro %}