main.game {
  display: none;
}

canvas {
  display: block;
}

canvas:focus {
  outline: none;
}

.game {
  background-color: white;
  z-index: 10;
}

.game.active {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}