<html class="reftest-wait"> <head> <style> .dddd:before { content: "generated"; } </style> <script> function b() { document.getElementById("float").style.cssFloat = ""; setTimeout(b2, 30); } // This is just for visual effect, to make the timing clear. // It's not needed for the crash. function b2() { document.body.style.background = "#eee"; document.documentElement.removeAttribute("class"); } </script> </head> <body onload="document.body.offsetHeight; setTimeout(b, 0);"> <span class="dddd"><div></div><span id="float" style="float: left"></span></span> </body> </html>