* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#game-canvas {
  display: block;
  box-shadow: 0 0 50px rgba(0, 0, 255, 0.5), 0 0 12px rgba(0, 0, 200, 0.3);
  image-rendering: pixelated;
}