<https://www.accede-web.com/en/guidelines/html-css/using-css/use-css-to-lay-out-text/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.accede-web.com/en/guidelines/html-css/using-css/use-css-to-lay-out-text/>