* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow: hidden;
  background: #000000;
}

.full-screen-3d-example {
  opacity: 0;
  transition: opacity 1s ease-out;
}

.full-screen-3d-example.-loaded {
  opacity: 1;
}