*{box-sizing:border-box;font-family:Microsoft YaHei,PingFang SC,Arial,sans-serif;margin:0;padding:0}:root{--primary-color:#f95707;--main-padding:15px;--page-bg-color:#f5f5f5}html{font-size:14px;height:100vh}body,html{overflow:hidden}body{background:var(--page-bg-color)}#app,body{height:100%}#app{max-width:750px;display:flex;flex-direction:column;margin:0 auto;overflow:auto}img{font-size:0;width:100%}.container{margin:0 auto;padding:0 var(--main-padding)}