html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0a0e1a;
}

#scene {
  display: block;
  width: 100vw;
  height: 100vh;
  animation: fadeIn 1.4s ease-out both;
  cursor: grab;
}

#scene:active {
  cursor: grabbing;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}