@media screen and (min-width:100px) and (max-width:320px) {
    #wrapper{ width:100%;}
	.caseList dd{ width:100%;}
}
@media screen and (min-width: 321px) and (max-width: 640px) {
    #wrapper{ width:100%;}
	.caseList dd{ width:50%;}
}
@media screen and (min-width:641px) and (max-width:1000px) {
    #wrapper{ width:100%;}
	.caseList dd{ width:33.3%;}
}

@media screen and (min-width:1001px) and (max-width:1200px) {
    #wrapper{ width:100%;}
	.caseList dd{ width:25%;}
}

@media screen and (min-width:1201px){
	.caseList dd{ width:25%;}
}