{% if diff %}
  <table class="table table-sm mb-0">
    {% for key, values in diff.items %}
      <tr>
        <td><code>{{ key }}</code></td>
        <td class="text-danger">{% if values.0 is None %}—{% else %}{{ values.0 }}{% endif %}</td>
        <td class="text-success">{% if values.1 is None %}—{% else %}{{ values.1 }}{% endif %}</td>
      </tr>
    {% endfor %}
  </table>
{% endif %}