canvas {
  display: block;
  margin: 0 auto;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  background: #000;
  cursor: none;
  max-width: 100%;
  height: auto;
}