#bc{height:220px;background-image:url(../img/produce-network.png);background-repeat:no-repeat;background-position:100px center}#bb{height:320px;background-image:url(../img/produce-fun.png);background-repeat:no-repeat;background-position:656px center}#bb2{height:220px;background-image:url(../img/produce-excavation.png);background-repeat:no-repeat;background-position:656px center}