block-first-child-5-dyn.html 571 B

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  1. <!DOCTYPE html>
  2. <html class="reftest-wait">
  3. <head>
  4. <style type="text/css">
  5. #separator, #first-child {
  6. height: 20px;
  7. background-color: green;
  8. }
  9. #parent {
  10. margin-top: 0;
  11. }
  12. #first-child {
  13. margin-top: 20px;
  14. }
  15. </style>
  16. <script type="text/javascript">
  17. function test() {
  18. document.getElementById('parent').style.marginTop = '-10px';
  19. document.documentElement.removeAttribute('class');
  20. }
  21. document.addEventListener('MozReftestInvalidate', test, false);
  22. </script>
  23. </head>
  24. <body>
  25. <div id="separator"></div>
  26. <div id="parent">
  27. <div id="first-child"></div>
  28. </div>
  29. </body>
  30. </html>