*{margin: 0;padding: 0;}
		ul,li{list-style: none;}
		ul.mask{overflow: hidden;width: 100%;position: absolute;top:0;z-index: -1;}
		.box{width: 800px;height: 10252px;background:rgba(91, 175, 110,0.7);margin:0 auto;position: relative;z-index: 0;}
		ul.mask li{transform: rotate(45deg);float:left;text-align: center;font-size: 20px;color: #ccc;}