<!DOCTYPE html> <html class="reftest-wait"> <!-- Test: if button is of the reset type, it is barred from constraint validation and should not be affected by :-moz-ui-invalid pseudo-class. --> <link rel='stylesheet' type='text/css' href='style.css'> <body onload="document.getElementById('b').setCustomValidity('foo'); document.documentElement.className='';"> <button class='notinvalid' id='b' type='reset'></button> </body> </html>