app/templates/developer/client_details/advanced.html

{% extends 'developer/client_details/base.html' %}

{% set client_details_page = "advanced" %}

{% block client_details_content %}
  <h1 class="h2">Danger Zone</h1>
  <form method="post">
    {{ form.csrf_token }}
    <div class="alert alert-danger">When your website is deleted, users can no longer log into it. This operation is not reversible!</div>
    <button type="submit" class="btn btn-danger">Delete "{{ client.name }}"</button>

  </form>
{% endblock %}