媒体查询 响应式开发

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媒体查询:响应式开发

第一种不同终端的宽度自适应代码：

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .container {
            width: 1200px;
            height: 1000px;
            margin: 0 auto;
            background-color: red;
        }
        @media screen and (min-width:1200px){
            body{
                /*当屏幕大小最小满足1200px即大于1200px的时候 */
                /*background-color: pink;*/
            }
            .container {
                width: 1170px;
                background-color: pink;
            }
        }
        @media screen and (min-width:992px) and (max-width: 1200px){
            .container {
                width: 970px;
                background: green;
            }
        }
        @media screen and (min-width: 768px) and (max-width: 992px){
            .container {
                width: 750px;
                background-color: blue;
            }
        }
        @media screen and (max-width: 768px){
            .container {
                width: 100%;
                background-color: orange;
            }
        }
    </style>
</head>
<body>
<div class="container"></div>
</body>
</html>

第二种不同终端宽度自适应代码 ：代码覆盖

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        html,body {
            margin: 0 ;
            padding: 0;
        }
        .container {
            width: 1200px;
            height: 1000px;
            margin: 0 auto;
            background-color: red;
        }
        /*以覆盖的方式存在*/
        @media (max-width: 768px){
            .container {
                width: 100%;
                background-color: orange;
            }
        }
        @media  (min-width: 768px) {
            .container {
                width: 750px;
                background-color: blue;
            }
        }
        @media (min-width:992px) {
            .container {
                width: 970px;
                background: green;
            }
        }
        @media (min-width:1200px){
                /*当屏幕大小最小满足1200px即大于1200px的时候 */
                /*background-color: pink;*/
            .container {
                width: 1170px;
                background-color: pink;
            }
        }
    </style>
</head>
<body>
<div class="container"></div>
</body>
</html>