django-components/sampleproject/components/calendar/calendar.html

<div class="calendar-component">
  <div>Today's date is <span>{{ date }}</span></div>
  <div>Your to-dos:</div>
  <ul>
    <li>
      {% component_block "todo" %}
        {% fill "todo_text" %}
          Stop forgetting the milk!
        {% endfill %}
      {% endcomponent_block %}
    </li>
  </ul>
</div>