netbox-community-netbox/netbox/templates/messages.html

<div
  id="django-messages"
  class="toast-container position-fixed bottom-0 end-0 m-3"
>
  {% if messages %} {% for message in messages %}
  <div
    class="django-message toast align-items-center border-0 bg-{% if message.tags %}{{ message.tags }}{% else %}info{% endif %}"
    role="alert"
    aria-live="assertive"
    aria-atomic="true"
    data-bs-delay="10000"
  >
    <div class="d-flex">
      <div class="toast-body">
        {{ message }}
      </div>
      <button
        type="button"
        class="btn-close me-2 m-auto"
        data-bs-dismiss="toast"
        aria-label="Close"
      ></button>
    </div>
  </div>
  {% endfor %}
  {% elif form and form.non_field_errors %}
  {% for error in form.non_field_errors.get_json_data %}
  <div
    class="django-message toast align-items-center border-0 bg-danger"
    role="alert"
    aria-live="assertive"
    aria-atomic="true"
    data-bs-delay="10000"
  >
    <div class="d-flex">
      <div class="toast-body">
        {{ error.message }}
      </div>
      <button
        type="button"
        class="btn-close me-2 m-auto"
        data-bs-dismiss="toast"
        aria-label="Close"
      ></button>
    </div>
  </div>
  {% endfor %}
  {% endif %}
</div>