使用 Media 属性前需添加兼容移动设备优先代码
<meta name=”viewport”content=”width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=”no”> /*参数说明：
- width=device-width：宽度等于当前设备宽度
- Initial-scale：初始缩放比列（默认 1.0）
- maximum-scale：允许用户缩放最大比列（默认 1.0）
- user-scalable：是否允许手动缩放（默认为 no）
*/
使用 Media 属性：<style>里执行媒体查询
@media mediatype and ( media feature ){
CSS-Code;
}参数说明：
响应式布局实际应用
HTML代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>响应式布局实际应用</title>
<meta name="viewport"content="width=device-width,initial-scale=1.0,maximum-scale=1,user-scalable=no" />
<meta name="format-detection" content="telephone=no,email=no"/>
<link rel="stylesheet" type="text/css" href="css/mo2.css"/>
</head>
<body>
<div>
<header id="head">
<ul>
<li>header1</li>
<li>header2</li>
<li>header2</li>
<li>header2</li>
<li>header2</li>
</ul>
<div>icon</div>
</header>
<section id="main">
<div class="left">
left
</div>
<div class="center">
center
</div>
<div class="right">
right
</div>
</section>
<footer id="foot">
footer
</footer>
</div>
</body>
</html>
CSS代码：
*{
margin: 0px;
padding: 0px;
font-family: "微软雅黑";
}
#head,
#foot,
#main
{
height: 100px;
width: 1200px;
/*width: 85%;*/
background-color: #3d4043;
text-align: center;
font-size: 48px;
line-height: 100px;
margin: 0 auto;
color: #fff;
}
#head div{
display: none;
font-size: 20px;
height: 30px;
width: 100px;
background-color: #5dcff4;
float: right;
line-height: 30px;
margin-top: 35px;
}
#head ul{
width: 80%;
margin-left: 10%;
}
#head ul li{
width: 20%;
float: left;
text-align: center;
list-style: none;font-size: 20px;
}
#main{
height: auto;
margin: 10px auto;
overflow: hidden;
}
.left,
.center,
.right{
height: 600px;
line-height: 600px;
float: left;
width: 20%;
background-color: #954ea6;
}
.center{
width: 60%;
border-left: 10px solid #FFF;
border-right: 10px solid #FFF;
box-sizing: border-box;
}
@media only screen and (max-width: 1200px) {
#head,
#foot,
#main{
width: 100%;
}
}
@media only screen and (max-width: 980px) {
.right{
display: none;
}
.left{
width: 30%;
}
.center{
width: 70%;
border-right: hidden;
}
}
@media only screen and (max-width: 640px) {
.left,
.center,
.right{
width: 100%;
display: block;
height: 200px;
line-height: 200px;
}
.center{
border: hidden;
border-top: 10px solid #FFFFFF;
border-bottom: 10px solid #FFFFFF;
height: 600px;
line-height: 600px;
}
#head ul{
display: none;
}
#head div{
display: block;
}
}