在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta name="description" content="Free Web tutorials">
<meta name="keywords" content="HTML,CSS,XML,JavaScript">
</head>
<body>

<p>The meta elements of this document describe the document and its keywords.</p>

</body>
</html>

源代码

动行结果