The content of this article is about how to implement adaptive squares in CSS? Is there any code? It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>CSS实现自适应正方形</title>
<style>
/*使用padding-bottom实现正方形*/
#test7{
width: 400px;
background: gray;
}
.placeholder {
width: 30%;
padding-bottom: 30%;/* padding百分比相对父元素宽度计算,用padding去填充height*/
height: 0;/*避免被内容撑开多余的高度 */
background: #4acfff;
}
.vw {
width: 10%;
height: 10vw;
background: pink;
}
</style>
</head>
<body>
<!-- 使用padding-bottom实现正方形 -->
<!--
padding百分比相对父元素宽度计算,用padding去填充height
-->
<p id="test7">
<p class="placeholder">使用padding-bottom实现正方形</p>
</p>
<!-- 使用css3单位vw -->
<!--
原理同padding，也是利用了vw是相对宽度，不过要注意是相对视窗宽度哦
-->
<p class="vw"></p>
</body>
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