.navspan{font-size:16px;font-weight:600;margin-left:20px;margin-right:0}ul li{list-style:none}.knowledge{margin-top:16px;font-weight:500;font-size:14px;color:#7d832a}.finish{width:48px;height:48px}.studyBoxShow div{width:300px;height:300px;margin:0 auto;padding-top:100px}.studyBoxShow div img{display:block;margin:0 auto}.studyBoxShow div p{text-align:center}.studyBoxShow div button{position:relative;left:50%;top:30px;transform:translate(-50%);-webkit-transform:translate(-50%)}.studyBoxModal{z-index:9999999;position:relative}