body {
  margin: 0;
  background: #222;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: sans-serif;
}

#game-container {
  position: relative;
}

#game {
  display: block;
  border: 2px solid #555;
  background: #87ceeb;
  image-rendering: pixelated;
  cursor: pointer;
}