*{margin:0;padding:0}.app .bg{position:relative;width:100vw;height:auto;background:#000}.app .bg .bgImg{width:100vw;height:auto;vertical-align:middle}.codeBtn{position:absolute;bottom:190px;left:0;right:0;text-align:center;z-index:9}.codeBtn .box{display:flex;justify-content:center;align-items:center;font-size:16px}.codeBtn .code{display:inline-block;color:#fff;border-radius:20px;background:rgba(51,51,51,.6);padding:6px 20px}.codeBtn .copy{color:#fff;border-radius:20px;background:#333;margin-left:30px;padding:6px 10px}.app .bg .btnImg{width:182px;height:54px;margin:20px auto}