@media screen and (max-width: 420px) and (min-width: 320px) {
    #company_profile article{
	background-image: url("../images/sp_diamond.png");
	}
}

@media screen and (max-width: 2000px) and (min-width: 421px) {
    #company_profile article{
	background-image: url("../images/diamond.png");
	}
}