{% for label, messages in app.flashes(['danger', 'warning', 'success', 'info']) %} {% if messages | length %} <div class="alert-block-container container pt-1"> {% for message in messages %} <div class="alert alert-{{ label }} alert-dismissible fade show d-flex align-items-center" role="alert"> <div class="ab-message">{{ message | trans }}</div> <button type="button" class="close alert-{{ label }}" data-dismiss="alert" aria-label="Close"> <span aria-hidden="true">×</span> </button> </div> {% endfor %} </div> {% endif %}{% endfor %}