#game-of-life-canvas {
  position: fixed; /* Stays in place when scrolling */
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999; /* High Z-index to sit on top visually */
  pointer-events: none; /* KEY: Allows clicks to pass through to the site below */
  opacity: 0.3; /* Make it subtle/faint like Google's */
}