<!DOCTYPE html> <html class="reftest-wait"> <head> <style> #wrapper { overflow: hidden; } #testDiv1 { width: 500px; height: 100px; position: relative; overflow: hidden; } </style> <script> window.addEventListener("MozReftestInvalidate", function() { testDiv1.style.left = "-500px"; testDiv1.style.transform = "translateX(500px)"; document.documentElement.removeAttribute("class"); }, false); </script> </head> <body> <div id="wrapper"> <div id="testDiv1" style="background:yellow;"></div> </div> </body> </html>