head_custom.html

{% assign math = page.math | default: layout.math | default: site.math %}

{% case math %}
  {% when "mathjax" %}
    {% include mathjax.html %}
{% endcase %}

{% if site.is_draft %}
<div class="banner bg-yellow-100">
  <h2 class="fw-300">{{ site.draft_banner }}</h2>
</div>
{% endif %}