Flash messages in for Flask framework

flash.html

  {% for message in get_flashed_messages() %}
  <div class="alert alert-warning">
    <button type="button" class="close" data-dismiss="alert">&times;</button>
    {{ message }}
  </div>
  {% endfor %}

<!-- Another template design for using flash messages -->
{% for message in get_flashed_messages() %}
<div class="alert alert-success">
    <div class="container-fluid">
    <div class="alert-icon">
        <i class="material-icons">check</i>
    </div>
    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
        <span aria-hidden="true"><i class="material-icons">clear</i></span>
    </button>
    {{ message }}
    </div>
</div>
{% endfor %}