响应式布局的基本实现

1.CSS 中的Media Quary (媒体简介)；

  • 设备宽高：device-width,device-height(物理设备)
  • 渲染窗口的宽和高：width,height
  • 设备的手持方向；orientation
  • 设备的分辨率：resolution

2.使用方法

  • 外联
  • 内嵌样式

Coding

index.html 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" type="text/css" href="style.css" media="only screen and (max-width:640px)">
    <style>
        @media screen and (min-width:640px){
            body{
                background-color: coral;
            }
        }
    </style>
</head>
<body>

</body>
</html>

style.css

    *{
        padding: 0px;
        margin: 0px;
    }

    body{
        background-color: aqua;
    }

aaaaaa.gif

响应式布局的实例操作

Coding

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
        <div class="heading">heading</div>
        <div class="container">
            <div class="left">left</div>
            <div class="main">main</div>
            <div class="right">right</div>
        </div>
        <div class="footing">footing</div>

</body>
</html>

style.css

*{
    padding: 0px;
    margin: 0px;
}

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

.heading{
    height: 100px;
    background-color: aqua;
}

.right,.left,.main{
    background-color: aquamarine;
}

.footing{
    height: 100px;
    background-color: bisque;
}
@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{
        height: 400px;
        float: left;
    }
    .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;
    }
}

01.gif

bootstrap

赏

一个好奇的人