<!DOCTYPE HTML> <html class="reftest-wait"> <body> <div style="transform:translateX(100px); width:200px; height:200px; border:1px solid black"> <div style="position:absolute;"> </div> <div style="position:absolute;"> <div id="d" style="display:none; position:fixed; right:0; width:50px; height:80px; background:yellow;"> </div> </div> </div> <script> function doTest() { document.getElementById("d").style.display = ""; document.documentElement.removeAttribute("class"); } window.addEventListener("MozReftestInvalidate", doTest, false); </script>