.dialog-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0;
  visibility: hidden;
}

.dialog-popup[open],
.dialog-popup.transitioning {
  opacity: 1;
  visibility: visible;
  z-index: 5;
}