#layer1 {
	  background-image: url('https://i.imgur.com/cuM7BfJ.jpeg');
	}
	#layer2 {
	  background-image: url('https://i.imgur.com/U84bRbT.jpeg');
	}
	#layer3 {
	  background-image: url('https://i.imgur.com/Zu1Rnsf.jpeg');
	}
	#layer4 {
	  background-image: url('https://i.imgur.com/7OE4kNM.jpeg');
	}

	@media (orientation: portrait) {
	  #layer2 {
		background-image: url('https://i.imgur.com/8aAQzXp.jpeg');
	  }
	}