trycss3_border-radius 在线代码实例

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<style> 
div
{
    border:2px solid #a1a1a1;
    padding:10px 40px; 
    background:#dddddd;
    width:300px;
    border-radius:25px;
}
</style>
</head>
<body>
<div>border-radius 属性允许您为元素添加圆角边框！ </div>
</body>
</html>
 
 
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运行结果
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