效果

html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="../0715/static/css/zuoye1.css">
    <title>移动端自适用</title>
    <link rel="stylesheet" href="">
</head>
<body>
    <div class="box">Hello  World</div>
</body>
</html>

css

*
{
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
    font-size: larger;
    font-size: calc(100vw / 3.75);
}
body {
/* font-size: 16px;  */
  /* font-size: 0.16rem;   */
}
@media (max-width:375px    ) {
        html {
            font-size: 87.5px
        }
}
@media  (min-width:470px    ) {
html {
    font-size: 125px;
}
}
@media  (min-width:376px    )   and    (max-width:469px    )     {
    html {
        font-size: 60px;
    }
    }

实例演示移动端布局原理

效果

html

css

相关文章