xxxxxxxxxx
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
<style>
p
{
border-style:dotted solid;
}
</style>
</head>
<body>
<p>2种不同的边框样式。</p>
</body>
</html>