.screen-intro {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #000;
  opacity: 1;
  transition: opacity 200ms linear;
}
.screen-intro[hidden] { display: none !important; }
.screen-intro.screen-intro-closing { opacity: 0; }
.screen-intro video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}