body {
  margin: 0;
  overflow: hidden;
  background-color: #111;
  font-family: sans-serif;
}

#canvas-container {
  width: 100vw;
  height: 100vh;
  display: block;
}

#instructions {
  position: absolute;
  top: 20px;
  left: 20px;
  color: white;
  background: rgba(0, 0, 0, 0.5);
  padding: 15px;
  border-radius: 8px;
  pointer-events: none;
}