body .ui-dialog .ui-dialog-content #mesch-dlm-tree-dialog {
  position: relative;
}
body .ui-dialog .ui-dialog-content #mesch-dlm-tree-dialog .dialog-content-overlay {
  bottom: 0;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  z-index: 10;
}
body .ui-dialog .ui-dialog-content #mesch-dlm-tree-dialog .dialog-content-overlay.hide {
  display: none;
}