.scrim {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: -1;
  transition: opacity 0.2s ease-in-out, z-index 0.2s step-end;
  opacity: 0;
}

.scrim[data-scrim-open-value="true"] {
  opacity: 1;
  transition: opacity 0.2s ease-in-out, z-index 0.2s step-start;
}