third_party/WebKit/LayoutTests/fast/multicol/dynamic/abspos-multicol-with-spanner-becomes-spanner.html

   1 <!DOCTYPE html>
   2 <p>We have a multicol with an absolutely positioned multicol child. That child has a spanner inside. The absolutely positioned multicol child isn't part of its parent multicol, since it's out of flow. The absolutely positioned multicol also has column-span:all, but it doesn't apply, since it's out of flow. Now make it statically positioned. That will turn it into a spanner in the parent multicol. At the same time, change it from multicol to regular block. It will still be a spanner, but since it's no longer multicol, its child spanner can no longer be one, since you cannot nest spanners in the same multicol context. So you end up with a multicol with a spanner with a regular (invalid spanner) block.</p>
   3 <p>Below there should be four squares stacked vertically, in the following order: hotpink, yellow, papayawhip, olive.</p>
   4 <div style="-webkit-column-count:3; -webkit-column-gap:0; width:50px; background:olive;">
   5     <div style="height:150px; background:hotpink;"></div>
   6     <div id="elm" style="position:absolute; -webkit-column-count:3; -webkit-column-span:all; padding-top:50px; background:yellow;">
   7         <div style="-webkit-column-span:all; height:50px; background:papayawhip;"></div>
   8     </div>
   9     <div style="height:150px;"></div>
  10 </div>
  11 <script>
  12     document.documentElement.offsetTop;
  13     var elm = document.getElementById("elm");
  14     elm.style.position = "static";
  15     elm.style.webkitColumnCount = "auto";
  16 </script>