菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
<style>
h1 {
  text-decoration: underline overline dotted red;
}

h2 {
  text-decoration: underline overline wavy blue;
}
</style>
</head>

<body>
<h1>This is heading 1</h1>
<h2>This is heading 2</h2>

<p><strong>注意:</strong>在  Edge/Internet 浏览器中没有效果。</p>

</body>

</html>
              