1rem=1個(gè)根元素的font-size

1.更改視口標(biāo)簽

  <meta name="viewport"  content="width=device-width,user-scalable=no,viewport-fit=contain,initial-scale=1,maximum-scale=1,minimum-scale=1">

2、引入flexible.js

<script src="http://g.tbcdn.cn/mtb/lib-flexible/0.3.4/??flexible_css.js,flexible.js"></script>