html, body {
  margin: 0;
  padding: 0;
  background: #000;
  color: #fff;
  height: 100%;
}

#game-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  background: #000;
}

#game-canvas {
  image-rendering: optimizeQuality;
  max-width: 100vw;
  max-height: 100vh;
  display: block;
}