body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: linear-gradient(to bottom right, #e0f7fa, #fff3e0);
  margin: 0;
  padding: 20px;
}

h2 {
  color: #333;
}

.controls {
  margin: 15px auto;
  padding: 10px;
  background: #ffffffaa;
  border-radius: 10px;
  width: 80%;
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

canvas {
  margin-top: 20px;
  border: 2px solid #333;
  border-radius: 10px;
  background: #fefefe;
}

footer {
  margin-top: 10px;
  font-size: 14px;
  color: #444;
}