<!DOCTYPE html> <html class="reftest-wait"> <link rel='stylesheet' type='text/css' href='style.css'> <body onload="document.getElementById('i').checked = false; if (!document.getElementById('i').matches(':-moz-ui-invalid')) { document.body.textContent='FAIL'; } else { document.body.textContent='SUCCESS'; } document.documentElement.className='';"> <input id='i' type='radio' required> </body> </html>