.nav-box{width:100%;text-align:center}.nav-box img{width:200px;height:100rpx;margin-top:20px}.nav-box .tip{padding:10px;color:red;font-size:16px}.nav-box .btn{width:50%;height:60px;line-height:60px;font-size:16px;background-color:red;color:#fff;border-radius:30rpx!important;margin-top:20px;margin-left:25%}