响应式布局

• 响应式布局介绍
• 响应式布局基本实现
• 响应式布局实例

响应式布局介绍

响应式布局.png

响应式布局基本实现

基本实现.png

使用外联样式设置屏幕最大宽度为640px时背景色，使用内联样式设置最小宽度为640px时的背景色

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>响应式布局</title>
    <!--media query的知识-->
//外联
    <link href="mycss.css" type="text/css" rel="stylesheet" media="only screen and (max-width:640px)">
//内联
    <style>
        @media screen and (min-width:640px){
            body{
                background-color: bisque;
            }
        }
    </style>
</head>
<body>

</body>
</html>

响应式布局实例

效果图：

响应式布局案例.gif

代码：
html：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <!--原比例缩放-->
    <meta name="viewport" content="width = device-width,initial-scale =1">
    <title>Title</title>
    <link href="style.css" type="text/css" rel="stylesheet">
</head>
<body>
    <div class="heading"></div>
    <div class="container">
        <div class="left"></div>
        <div class="main"></div>
        <div class="right"></div>
    </div>
    <div class="footing"></div>
</body>
</html>

CSS代码：

*{
    padding: 0px;
    margin: 0px;
}
.heading,
.container,
.footing
{
    margin: 10px auto;

}
.heading{
    height: 100px;
    background-color: chocolate;
}
.left,
.right,
.main{
    background-color: cornflowerblue;
}
.footing{
    height: 100px;
    background-color: aquamarine;
}
@media screen  and (min-width: 960px){
    .heading,
    .container,
    .footing{
        width: 960px;
    }
    .left,
    .main,
    .right{
        float: left;
        height: 500px;
    }
    .left,
    .right{
        width: 200px;
    }
    .main{
        margin-left: 5px;
        margin-right: 5px;

        width: 550px;
    }
    .container{
        height: 500px;
    }
}
@media screen and (min-width: 600px) and (max-width:960px){
    .heading,
    .container,
    .footing{
        width: 600px;
    }
    .left,
    .main{
        float: left;
        height: 400px;
    }
    .right{
        display: none;
    }
    .left{
        width: 160px;
    }
    .main{
        width: 435px;
        margin-left: 5px;
    }
    .container{
        height: 400px;
    }


}
@media screen and (max-width: 600px){

    .heading,
    .container,
    .footing{
        width: 400px;
    }
    .left,
    .right{
        width: 400px;
        height: 100px;
    }
    .main{
        margin-top: 10px;
        width: 400px;
        height: 200px;
    }
    .right{
        margin-top: 10px;
    }
    .container{
        height: 420px;
    }
}