third_party/WebKit/LayoutTests/fast/block/positioning/abspos-auto-left-fixed-top-change-parent-margin-left.html

   1 <!DOCTYPE html>
   2 <p>There should be no red on this page.</p>
   3 <div style="position:relative;">
   4     <div id="elm" style="width:200px; height:200px; background:red;">
   5         <div style="position:absolute; top:0; width:200px; height:200px; background:green;"></div>
   6     </div>
   7 </div>
   8 <script>
   9     document.body.offsetTop;
  10     document.getElementById("elm").style.marginLeft = "200px";
  11 </script>