The HTML Article Element (<article>) represents a self-contained composition in a document, page, application, or site, which is intended to be independently distributable or reusable, e.g., in syndication. This could be a forum post, a magazine or newspaper article, a blog entry, or any other independent item of content. Each <article> should be identified, typically by including a heading (h1-h6 element) as a child of the <article> element.
Here are a few important points to remember about the <article> element:
Any self-contained content should be placed inside the <article> element.
Self-contained means that if we take the <article> element and everything inside it out into another context, all the content is self-explanatory and does not need anything else around it to be understood.
An <article> can be nested inside another <article> element.
There can be more than one <article> element in a single page.