html{-webkit-text-size-adjust:none;overflow-y:scroll}body{min-width:320px;line-height:1.5;font-family:Arial,Helvetica,STHeiTi,sans-serif;background:#f2f2f2}img{max-width:100%}img,input{vertical-align:middle}a{text-decoration:none}*{-webkit-tap-highlight-color:transparent}html{font-size:50px}body{font-size:24px}@media screen and (min-width:320px){html{font-size:21.33px}body{font-size:12px}}@media screen and (min-width:360px){html{font-size:24px}body{font-size:12px}}@media screen and (min-width:375px){html{font-size:25px}body{font-size:12px}}@media screen and (min-width:384px){html{font-size:25.6px}body{font-size:14px}}@media screen and (min-width:400px){html{font-size:26.67px}body{font-size:14px}}@media screen and (min-width:414px){html{font-size:27.6px}body{font-size:14px}}@media screen and (min-width:424px){html{font-size:28.27px}body{font-size:14px}}@media screen and (min-width:480px){html{font-size:32px}body{font-size:15.36px}}@media screen and (min-width:540px){html{font-size:36px}body{font-size:17.28px}}@media screen and (min-width:720px){html{font-size:48px}body{font-size:23.04px}}@media screen and (min-width:750px){html{font-size:50px}body{font-size:24px}}