<!DOCTYPE html> <html class="reftest-wait"> <!-- Test: if input isn't valid nor barred from constraint validation, and its checkedness has changed, it should be affected by :-moz-ui-invalid pseudo-class. --> <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='checkbox' required> </body> </html>