article代表一个在文档、页面或者网站中自成一体的内容
其目的是为了让开或重用
譬如论坛的帖子、博客的文章、一片用户的评论、一个互动的widget小工具
article 会有一个标题（通常在header里），会有一个footer页脚
如果在aritcle内部再嵌套article
那就代表的article是与它外部的内容有关联，如博客文章下面的评论
标准article元素的用法：
<article> <h1>文章标题</h1> <p>文章内容</p> <footer> <p><small>版权</small></p> </footer> </article>
效果如下
例如：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> article </title> </head> <body> <article> <header> <h1>王者荣耀</h1> </header> <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aliquid esse odio quam quo repellat? Accusamus atque, dicta dolore iste maxime odio odit sequi suscipit tempora ut. Aspernatur officia placeat quibusdam!</p> <p>Amet eos esse nisi numquam obcaecati quos repellat saepe. Ab alias aliquam assumenda consequuntur cumque debitis, deserunt, enim expedita in molestias mollitia voluptatum! Cumque dicta laborum magni maiores recusandae repudiandae!</p> <p>Deleniti distinctio, eveniet magnam maiores odio officiis provident reprehenderit. Aliquid eius, enim expedita labore magnam odit quae quaerat quisquam tempore voluptates? Cupiditate error nisi quaerat ratione reiciendis sed soluta voluptas.</p> <footer> © 2017 </footer> </article> </body>
效果如下：
