.yinsibox{position:fixed;width:100vw;height:100vh;z-index:99;background:rgba(0,0,0,.6);top:0}.yinsicontain{width:80%;padding:5%;font-size:14px;background-color:#fff;border-radius:10px;margin:0 auto;margin-top:20vh}.btn{display:inline-block;width:100px;height:30px;border:1px solid #ccc;text-align:center;line-height:30px;border-radius:4px}.btn:nth-child(2){border:1px solid #1283ff;background-color:#1283ff;color:#fff}