.clear:after {content:"."; display:block;  height:0;clear:both; visibility:hidden; }
html, body, form, p, div, h1, h2, h3, h4, h5, h6 {-webkit-text-size-adjust:none;-moz-text-size-adjust:none;-o-text-size-adjust:none;}
input,textarea {font-family:'PingFang SC','PingFang TC','Microsoft YaHei',"STHeiti",arial,helvetica,sans-serif;font-weight:normal;-webkit-appearance: none;}
img { display: block;width: 100%;}
html {margin:0;padding:0;font-size: 100%;width: 100%;min-width: 320px;max-width: 750px;margin:0 auto;}
body {margin:0;padding:0; width:100%;font-size:15px;font-family:'PingFang SC','PingFang TC','Microsoft YaHei',"STHeiti",arial,helvetica,sans-serif;}
a img,img {border:0;}
.page_wrap { width:100%;margin:0 auto;position: relative;min-width: 320px;max-width:750px;overflow: hidden;}
a { text-decoration:none;outline:none;}
ul,li,h1,h2,h3,h4,h5,h6,p {padding:0;margin:0; list-style:none;font-weight:normal;}