openhab-core/bundles/org.openhab.ui.dashboard/templates/warn.html

        <div class="links row">
            <div class="link-wrapper col-md-12 col-sm-12 col-xs-12">
                <div class="body" style="background-color: #FF0000; padding: 20px">
                     <div class="overlay" style="font-size: 150%; color: #FFFFFF">
                     ${warn.exposed}
                     </div>    
                </div>
            </div>
        </div>
        <div class="line">
            <div class="decorator"></div>
            <hr />
        </div>