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pseudoClasses.html
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pseudoClasses.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>伪类</title>
</head>
<style>
.pseudoOne{width: 60px;height: 30px;background: darkgoldenrod;position: relative;margin: 0 auto}
.pseudoOne::before{content: "";position: absolute; left:-30px;top: 0;width: 0;height: 0;border-top: 15px solid transparent;border-right: 30px solid #FFD9E0;border-bottom: 15px solid transparent;}
.yhq{width: 200px;height: 80px;background: darkred;position: relative;margin: 20px auto;}
.yhq::before{content: "";position: absolute;top:0px;left:-4px;border-left: 8px dotted white;height:100%;}
.yhq::after{content: "";position: absolute;top:0;right:-4px;border-left: 8px dotted white;height:100%;}
.text{position: relative;line-height: 2;display: inline-block;margin: 20px auto;}
.text::before{content: "";position: absolute;left:calc(50% - 15px);bottom: 0;width: 30px;height:2px;background: darkgoldenrod;}
</style>
<body>
<div class="pseudoOne"></div>
<div class="yhq"></div>
<div class="text">这是伪类啊</div>
<!--有事暂停，以后续写-->
</body>
</html>