body {
  margin: 0;
  background: #111;
  color: #fff;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.game-container {
  text-align: center;
}

canvas {
  background: #222;
  border: 2px solid #555;
  border-radius: 50%;
}

.instructions {
  margin-top: 10px;
  font-size: 1.2em;
}