*,*:before,*:after{box-sizing:border-box}html,body,div,span,h1,h2,h3,p,a,img,ul,li{margin:0;padding:0;border:0}html,body{min-height:100%}body{font-family:PingFang SC,Microsoft YaHei,sans-serif;line-height:1}ul{list-style:none}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,textarea,select{font:inherit}