mailcow-dockerized/data/web/rc/program/js/tinymce/skins/lightgray/Panel.less

// Panel

.@{prefix}-panel {
	border: 0 solid mix(rgb(red(@panel-border), green(@panel-border), blue(@panel-border)), @panel-bg, 20%); 
	border: 0 solid @panel-border;
	.vertical-gradient(@panel-bg, @panel-bg-hlight);
}