Article <h1> Heading
An article element contains information that will still make sense if it is removed from the rest of the page content.
The obvious use would be for news updates, blog posts and comments.
The article has many other uses including product descriptions and specifications, sales flyers, special offers and any other content which could be used elsewhere or on another web page.
Time sensitive information can be enclosed in an article element so that it can be easily switched and/or distributed. Note that this example has minimal styling and the footer has not been emplyed.
The styled example below has information that could be included in any page where information about using fonts is required and has the © notice in the footer so that we know who authored it and when.