.overlay.open,
.ui-widget-overlay {
  inset: 0;
  opacity: 0.5;
  position: fixed;
  z-index: 8000;
  transition: opacity 0.5s;
}

.overlay {
  opacity: 0;
  transition: opacity 0.5s;
  background-color: var(--overlay-background-color, #000);
}