.van11a-dialog {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;

  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.van11a-dialog[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}