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圆角框练习(1)

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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
<style>
pre {
	width:100px;
	display: block;
	padding: 9.5px;
	margin: 0 0 10px;
	font-size: 13px;
	line-height: 1.42857143;
	color: #333;
	word-break: break-all;
	word-wrap: break-word;
	background-color: #f5f5f5;
	border: 1px solid #ccc;
	border-radius: 4px;
}
</style>
</head>
<body>
<pre>系统测试</pre>
</body>
</html>

圆角框练习(1)