xF2 Guides Add advertising centered and only show on pc or only show on mobile

@media all and (min-width: 480px) {
	.deskContent {
			display:block;
			margin: 0
			auto;
}	
	.phoneContent {
		   display:none;
}
   
}

@media all and (max-width: 479px) {
	.deskContent {...