.back{top:100px;top:60%;background-image:url(../../static/img/back.d1d29f6c.png)}.back,.back-home{position:fixed;width:50px;height:50px;border-radius:30px;text-align:center;line-height:60px;color:#fff;z-index:999;right:0;background-size:cover;background-repeat:no-repeat}.back-home{top:100px;top:53%;background-image:url(../../static/img/home.a73fc1c7.png)}