<!DOCTYPE html> <html class="reftest-wait" style="display: none"> <head> <script> function doTest() { document.documentElement.style.display = ""; document.documentElement.className = ""; } window.addEventListener("MozReftestInvalidate", doTest, false); </script> </head> <body> <table style="position: absolute; top: 100px; left: 100px;"> <tr> <td> <div style="position: absolute; left: 20px; top: 20px; background: black; height: 20px; width: 20px"></div> </td> </tr> </body> </html>