Day34媒体查询配合rem

image

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>媒体查询</title>
    <style>
        /* 视口宽度是375，网页背景色是绿色 */
        @media (width:375px) {
            body {
                background-color: green;
            }
        }
    </style>
</head>
<body>
    
</body>
</html>

image

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>rem适配</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        /* 1.使用媒体查询，给不同视口的屏幕设置不同的HTML字号 */
        @media (width:320px) {
            html{
                font-size: 32px;
            }
        }
        @media (width:375px) {
            html{
                font-size: 37.5px;
            }
        }
        @media (width:414px) {
            html{
                font-size: 41.1px;
            }
        }

        /* 2.使用rem书写字号 */
        .box{
            width: 5rem;
            height: 3rem;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>
posted @ 2025-12-19 15:17  冰涿  阅读(0)  评论(0)    收藏  举报