@media (max-width: 767px) {

	#imgheader .imgheader-picture { background-image: url('img/header-a.jpg'); }	

}

@media (min-width: 768px) and (max-width: 991px) {
	
	#imgheader .imgheader-picture { background-image: url('header/header-b.webp'); }
	
}

@media (min-width: 992px) and (max-width: 1199px) {
	
	#imgheader .imgheader-picture { background-image: url('header/header-c.webp'); }
	
}

@media (min-width: 1200px) {
	
	#imgheader .imgheader-picture { background-image: url('header/header-d.webp'); }
	
}