<!DOCTYPE html> <html class='reftest-wait'> <!-- Test: if select is required and has a selected option and the selection did changed, :-moz-ui-valid should apply. --> <link rel='stylesheet' type='text/css' href='style.css'> <body onload="document.getElementById('s').selectedIndex = 0; document.documentElement.className = '';"> <select id='s' class='valid' required> <option selected>foo</option> </select> </body> </html>