<!doctype html> <title>CSS Test Reference</title> <link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> <div dir="rtl"> 123 456 <span><span> 789 101112 </span></span></div> <div dir="rtl"> 123 456 <span dir="ltr"><span> 789 101112 </span></span></div> <div dir="rtl"> 123 456 <span><span> 789 101112 </span></span></div>