.classification {position: relative;width: 91px;height: 17px;}.classification .cover {position: absolute;background: transparent url('../images/ratestar/stars.png') top left no-repeat;top: 0px;left: 0px;width: 91px;height: 17px;z-index: 101;}.classification .progress {position: absolute;background: transparent url('../images/ratestar/stars_full.png') top left no-repeat;top: 0px;left: 0px;height: 17px;z-index: 102;}