#boot-screen {
  background: #000;
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 9999;
}

#boot-logo {
  width: min(60vmin, 520px);
  height: auto;
  opacity: 0;
  animation: bootFade 1200ms ease-out forwards;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, .25));
}

@keyframes bootFade {
  from {
    opacity: 0;
    transform: scale(.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}