Content groups
Sections identify content groupings on a page. Each article has an ID associated with it and begins with a heading element <h2>
.
Sections are best used on long or complex pages with several pieces of content; it affords some visual separation of content blocks.
Content heading
All related content goes here.
<section id="example">
<h2>Content heading</h2>
<p>All related content goes here.</p>
</section>