6How To Use Messages With Flask - Flask Fridays #6 10:43

{% for message in get_flashed_messages() %}
    <div class="alert alert-success alert-dismissible fade show" role="alert">
      {{ message }}
      <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close">关闭</button>
    </div>

{% endfor %}