Responsive Web Design

//自适应网页声明

<meta name="viewport" content="width=device-width,initial-scale=1.0"/>

//根据浏览器宽度引用CSS式样

<link rel="stylesheet" style="text/css" media="screen and (max-device-width:400px)" href="" />

//内部式样

<style type="text/css" media="screen,projection">

//根据条件改变式样

    @media screen and (max-drvice-width:1000px){

    } </style>