<https://coursebuilder.thimpress.com/demo-rtl/courses/build-responsive-real-world-website-with-html5/#primaryimage>
<http://schema.org/height>
"1024"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://coursebuilder.thimpress.com/demo-rtl/courses/build-responsive-real-world-website-with-html5/>