HTML5 Article element. It's a semantic element with no visual properties. Related elements like Header have padding.

HTML5 Article element. It's a semantic element with no visual properties. Related elements like Header have padding.
* https://en.wikipedia.org/wiki/Article_element

<article>
  <header>
    <h1>Shapes</h1>
    <p>An article about shapes</p>
  </header>
  <h2>Names of Shapes</h2>
  <p>There are several different types of shapes...</p>
  <section>
    <h3>Triangles</h3>
    <p>Here is some info about triangles</p>
  </section>
</article>