html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
}

#game {
  display: block;
  width: 100vw;
  height: 100vh;
  object-fit: contain;
  background: #000;
  image-rendering: pixelated;
}