{% macro banner(body, type=None, with_tick=False, delete_button=None) %}
  <div class='banner{% if type %}-{{ type }}{% endif %}{% if with_tick %}-with-tick{% endif %}'>
    {{ body }}
    {% if delete_button %}
      <form method='post'>
        <input type="hidden" name="csrf_token" value="{{ csrf_token() }}" />
        <input type="submit" class="button" name="delete" value="{{ delete_button }}" />
      </form>
    {% endif %}
  </div>
{% endmacro %}