html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #07050c;
}

/* The WebGL canvas shows the game world; the 2D canvas on top draws crisp text and menus. */
canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}

#gl {
  z-index: 0;
}

#game {
  z-index: 1;
  cursor: crosshair;
  touch-action: none;
}