<https://dev.to/ubahthebuilder/css-tutorial-how-to-make-a-page-responsive-using-css-media-queries-2fih>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://dev.to/ubahthebuilder/css-tutorial-how-to-make-a-page-responsive-using-css-media-queries-2fih>