/* Collection modal shield: backdrop must remain the top interactive surface behind the sheet. */
#collectionBackdrop.collection-backdrop:not([hidden]){
  display:block!important;
  position:fixed!important;
  inset:0!important;
  z-index:1900!important;
  pointer-events:auto!important;
  touch-action:none!important;
  user-select:none!important;
  -webkit-user-select:none!important;
}
#collectionSheet.collection-sheet:not([hidden]){
  z-index:1910!important;
  pointer-events:auto!important;
}