css 响应式布局

方法一：用Meta 标签

<Meta charset="UTF-8" name="viewport" content="width=device-width,initial-scale=1">

贴上完整代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <Meta charset="UTF-8" name="viewport" content="width=device-width,initial-scale=1">
    <title>Document</title>
    <style>
        body {
            background: #abcdef;
        }
    </style>
</head>
<body>
    
</body>
</html>

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方法二：用rem，配合媒体查询

贴上完整代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <Meta charset="UTF-8">
    <title>Document</title>
    <style>
        body {
            background: #abcdef;
        }
        @media screen and (max-width: 1024px) {
            html {
                font-size: 20px;
            }
        }
        @media screen and (max-width: 768px) {
            html {
                font-size: 16px;
            }
        }
        @media screen and (max-width: 375px) {
            html {
                font-size: 12px;
            }
        }
        @media screen and (max-width: 320px) {
            html {
                font-size: 10px;
            }
        }
        .main {
            font-size: 4rem;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class="main">看我响应了!</div>
</body>
</html>

View Code

效果图：

css 响应式布局

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