HTML <aside>query_builder | Christopher Pisani
The <aside> element can be used as a sidebar container, to hold content like external links, and material irrelevant to the content of the main section. It can also be used, to separate a section of a document, whose content is not related to the document's main content.
A good example to better understand the <aside> element is to use the container for advertisment material within a document.
Like most elements, the <aside> element helps search engines in their performance and accuracy of the content they are distributing.
Looking at the example below, you can see that the <aside> element is separating the document for what the author of the article sees as irrelevant to his article.
No specific attributes are assigned for this element, other than the standard global attributes.