body {
  background: #222;
  color: #fff;
  font-family: sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
}

canvas {
  display: block;
  margin: 0 auto;
  border: 2px solid #fff;
}

#score {
  font-size: 20px;
  margin: 10px;
}

#controls {
  margin-top: 20px;
}

#controls button {
  font-size: 24px;
  padding: 10px;
  margin: 5px;
  background-color: #444;
  color: white;
  border: none;
  border-radius: 5px;
}