OctoPrint-SimpleEmergencyStop/octoprint_simpleemergencystop/templates/simpleemergencystop_navbar.jinja2

<a data-bind="click: click, visible: visibleTest()" href="#">
    <i class="icon-remove-sign" style="color: red"></i>
</a>


<div id="confirmation" class="modal hide fade">
    <div class="modal-header">
        <a href="#" class="close" data-dismiss="modal" aria-hidden="true">&times;</a>
        <h3>Emergency Stop!</h3>
    </div>
    <div class="modal-body">
        <p>
            {{ _('Are you sure you want to stop your printer?') }}
        </p>
    </div>
    <div class="modal-footer">
        <a href="#" class="btn" data-dismiss="modal" aria-hidden="true">{{ _('Cancel') }}</a>
        <a href="#" class="btn btn-danger" data-bind="click: sendCommand">{{ _('Proceed') }}</a>
    </div>
</div>