:root {
  --floor: #a9d6a6;
}

html, body { height: 100%; margin: 0; }

body {
  background: var(--floor);
  overflow: hidden;
}

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
}