{% block html_head -%}
{{site_name}}
{% block html_head_extra -%}
{% endblock html_head_extra -%}
{% endblock html_head -%}
{% block header -%}{% include "header.html" -%}{% endblock header -%}
{% block content %}{% endblock content %}
{% block footer -%}{% include "footer.html" -%}{% endblock footer -%}