html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: radial-gradient(circle at 50% 0%, #2a1d18 0%, #17100e 70%);
  -webkit-tap-highlight-color: transparent;
}
* { box-sizing: border-box; }

body {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Press Start 2P', monospace;
}

#game {
  width: 100%;
  max-width: 1024px;
  padding: 8px;
}

#game canvas {
  display: block;
  margin: 0 auto;
  image-rendering: pixelated;
}