.artifact{
	background-repeat:no-repeat;
	background-color:transparent;
	display:block;
	position:absolure;
}
.cat0,.cat1 {
background-image: url("http://img0.gram.pl/konkursyPop/SC2-konkurs_rectangle_300x250.jpg") !important;
height: 250px;
width: 300px;
}