菜鸟教程在线编辑器

AI 编程工具

 
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<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
<style>
.center
{
	text-align:center;
}
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</head>

<body>
<h1 class="center">标题居中</h1>
<p class="center">段落居中。</p> 
</body>
</html>
              