body {
  margin: 0;
  font-family: sans-serif;
  background: #5c94fc;
  display: flex;
}

#controls {
  width: 200px;
  padding: 10px;
  background: #222;
  color: #fff;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#controls input {
  width: 100%;
}

#controls button {
  padding: 8px;
  font-size: 14px;
  background: #444;
  color: #fff;
  border: none;
  cursor: pointer;
  margin-top: 10px;
}

#controls button:hover {
  background: #666;
}

canvas {
  border: 4px solid #333;
  margin: auto;
  background: #87ceeb;
}