<!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>