响应式布局

布局容器最基本使用

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>响应式布局study</title>
    <style>
        .container {
            height: 150px;
            background: pink;
            margin: 0 auto;
        }

        /* 手机屏幕 768以下 容器宽度100%*/
        @media screen and (max- 767px) {
            .container {
                 100%;
            }
        }
        /* 平板屏幕 大于等于768 容器宽度是750*/
        @media screen and (min- 768px) {
            .container {
                 750px;
            }
        }

        /*桌面显示器屏幕  大于等于992 容器宽度是950*/
        @media screen and (min- 950px) {
            .container {
                 950px;
            }
        }
        /*超大屏幕 大于等于1200 容器宽度是1170*/
        @media screen and (min- 1200px) {
            .container {
                 1170px;
            }
        }
    </style>
</head>
<body>
<!--响应式布局 首先需要一个布局容器-->
<div class="container">盒子1</div>
</body>
</html>

小demo 响应式导航

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>响应式导航demo</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        li {
            list-style: none;
        }
        .container {
             750px;
            margin: 100px auto;
        }

        .container ul li {
            float: left;
             93.75px;
            height: 30px;
            background: purple;
        }

        @media screen and (max- 767px) {
            .container {
                 100%;
            }
            .container ul li {
                 33.33%;
            }
        }
    </style>
</head>
<body>
<div class="container">
    <ul>
        <li>导航栏1</li>
        <li>导航栏1</li>
        <li>导航栏1</li>
        <li>导航栏1</li>
        <li>导航栏1</li>
        <li>导航栏1</li>
        <li>导航栏1</li>
        <li>导航栏1</li>
    </ul>
</div>

</body>
</html>

 <meta http-equiv="X-UA-Compatible" content="ie=edge">

栅格系统就是把内容划分成若干等分的列

rem 是把屏幕划分成若干等份的列

响应式布局