<div style="padding:20px;">{% for label, messages in app.flashes %} <div class="alert alert-{{ label }} alert-dismissible show" role="alert"> {% for message in messages %} {{ (message|raw)|nl2br }} {% endfor %} <button type="button" class="close" data-dismiss="alert" aria-label="Close"> <span aria-hidden="true">×</span> </button> </div>{% endfor %}</div>