body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  background: radial-gradient(#000011, #000);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100vh;
}

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

canvas {
  border: 2px solid #fff;
  display: block;
  margin: 20px auto;
  background: url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=800&q=80') no-repeat center center/cover;
  border-radius: 10px;
}

.controls {
  margin-top: 10px;
}

button {
  margin: 5px;
  padding: 8px 15px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 5px;
  border: none;
  background: #222;
  color: #fff;
  transition: 0.3s;
}

button:hover {
  background: #444;
}

#message {
  margin-top: 10px;
  font-weight: bold;
  font-size: 18px;
}