今天在看视频的时候学到的padding的隐藏技能
当宽度100%的时候，通过padding实现正方形，废话地不要，直接上代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>谷歌手机模式下验证，可以通过padding来设置实现正方形
</title>
<style>
body {
margin: 0;
padding: 0;
height: 100%;
width: 100%;
position: absolute;
}
.cBody {
position: fixed;
left: 0px;
top: 0;
bottom: 48px;
width: 100%;
background: red;
}
.inner {
position: relative;
width: 100%;
height: 0;
padding-top: 100%;
background: white;
}
</style>
</head>
<body>
<div class="cBody">
<div class="inner"></div>
</div>
</body>
</html>
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