:root {
  color-scheme: dark;
  background: #000;
}

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

body {
  background: #000;
}

#game {
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
  image-rendering: pixelated;
}