*,html,body{margin:0;padding:0}#app{background:#f5f5f5}*{margin:0;padding:0}.index{position:relative;width:100%;max-width:430px;margin:auto}.index-container{position:relative;height:912px;background:url(./img_new.e0a5c438.png) no-repeat center center;background-size:100% 100%}.index-img{width:100%;display:block;height:auto}.description{position:relative;font-weight:400;font-size:14px;text-align:center;width:300px;margin:auto;padding:20px}.btn{position:absolute;text-align:center;margin:auto;width:90%;left:5%;top:434px;height:70px;border-radius:25px;color:#fff;font-size:18px}.sec-btn{position:absolute;text-align:center;margin:auto;width:90%;left:5%;top:511px;height:70px;border-radius:25px;color:#fff;font-size:18px}.footer-btn{position:absolute;width:100%;left:0;bottom:0;height:18%}.btn-middle{position:absolute;text-align:center;margin:auto;top:600px;height:15%;width:100%;left:0}