.box{position:relative}.box,img{width:100%}img{display:block}.two .btn{position:absolute;width:100%;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;justify-content:center}.two .btn i{position:absolute;bottom:20px;left:110px;width:14px;height:20px;background:#000;border-radius:2px;transition:transform .4s ease}.two .btn img{cursor:pointer;margin:20px;width:15%}.four{position:relative;width:100%}.four .box-item{position:absolute;width:65%;height:80%;top:16%;left:50%;transform:translateX(-50%)}.four .box-item .jump-img{position:relative;height:50%;width:100%}.four .box-item .jump-img .is-show{position:absolute;top:0;left:50%;transform:translateX(-50%);opacity:0;transition:opacity .5s ease}.four .box-item .jump-img .active{opacity:1}.four .box-item .jump-img .jump-btn{position:absolute;width:100%;top:13%;display:flex;align-items:center;justify-content:space-around}.four .box-item .jump-img .jump-btn img{width:16%;cursor:pointer}.four .box-item .jump-img .right{right:3%}.four .box-item .jump-img .left,.four .box-item .jump-img .right{position:absolute;z-index:10;cursor:pointer;width:4%;top:50%;transform:translateY(-50%)}.four .box-item .jump-img .left{left:3%}