.change .head{color:#4e84ff;font-size:20px;padding:5px 20px}.change button{border:1px solid;margin:3px;width:130pt;height:30pt;border-radius:5pt;background:#fff;cursor:pointer}.change .group-wrap{width:100%;background:#fff;margin:10px}.change .db-wrap{padding:10px}.change .db-wrap .selected{background:#4e84ff;color:#fff}