.xlw15904{margin:20px 0;position:relative;height:70px;z-index:1}.xlw15904 .box{position:absolute !important;top:50%;left:50%;transform:translate(-50%,-50%);color:inherit;border-color:inherit}.xlw15904 .box .backstage-componet{position:static;border-color:inherit}.xlw15904 .box .backstage-componet .backstage-componet-bd{border-color:inherit}.xlw15904 .box .blocks-button{color:transparent}.xlw15904 .box .block-iconyoujiantou{position:relative;width:30px;height:50px;display:block;color:inherit;cursor:pointer;margin:0 auto !important;border:1px solid #aaa;border-color:inherit;border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px}.xlw15904 .box .block-iconyoujiantou::before{position:absolute;top:10px;animation:mymove 2s infinite;transform:translateX(-57%) rotate(90deg);left:50%;font-size:20px;height:22px;width:20px;overflow:hidden}.xlw15904 .box .block-iconyoujiantou span{display:none}@keyframes mymove{0%{top:10px}50%{top:20px}100%{top:10px}}