.box{position:relative;width:200px;height:200px;}.bg{position:absolute;left:0;bottom:0;width:0;height:0;border:100px solid #000;border-top-color:transparent;border-right-color:transparent;z-index:1;}.bg1{position:absolute;left:0;bottom:0;width:0;height:0;border:99px solid #fff;border-top-color:transparent;border-right-color:transparent;z-index:2;}.txt1{position:absolute;right:0;top:0;width:100px;height:100px;line-height:100px;text-align:center;z-index:3;}.txt2{position:absolute;left:0;bottom:0;width:100px;height:100px;line-height:100px;text-align:center;z-index:3;}	項目	各區(qū)