body{
	background-image: url(img/unsplash.webp); 
  	background-position: center;
  	background-repeat: no-repeat;
  	background-attachment: fixed;
  	background-size: cover;
}

@media only screen and (max-width: 600px){
	body{
		background-image: url(img/unsplash-low.webp); 
		background-position: center center;
		background-repeat: no-repeat;
		background-attachment: fixed;
		background-size: cover;
	}
}
  
@media only screen and (-webkit-min-device-pixel-ratio: 2){
	body{
		background-image: url(img/unsplash-low.webp); 
		background-position: center center;
		background-repeat: no-repeat;
		background-attachment: fixed;
		background-size: cover;
	}
}