<!DOCTYPE html> <html class='reftet-wait'> <!-- Test: if textarea is valid and its value has been modified, it should be affected by :-moz-ui-valid pseudo-class. --> <link rel='stylesheet' type='text/css' href='style.css'> <body onload="document.getElementById('t').value = 'foo'; document.documentElement.className = '';"> <textarea id='t' class='valid' required></textarea> </body> </html>