body {
  margin: 0;
  overflow: hidden;
  background-color: #000;
}

canvas {
  display: block;
}
.controls {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.control-button {
  padding: 10px 20px;
  font-size: 16px;
  z-index: 1;
  cursor: pointer;
  background-color: rgba(255, 255, 255, 0.8);
  border: none;
  border-radius: 4px;
  color: #333;
}

.control-button:hover {
  background-color: rgba(255, 255, 255, 0.9);
}