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

   1 <!DOCTYPE html>
   2 <style>
   3     .box { width:66px; height:66px; margin:auto; background:blue; }
   4 </style>
   5 <p>Change an ancestor of a descendant spanner to becoming a spanner, so that the descendant will cease to be a spanner.</p>
   6 <p>There should be three identical blue <em>squares</em> below. The space between them should be equal to the size of the squares.</p>
   7 <div style="-webkit-columns:3; -webkit-column-gap:0; width:132px;">
   8     <div class="box" style="-webkit-column-span:all; margin-bottom:66px;"></div>
   9     <div id="ancestor" class="box" style="margin:66px auto;">
  10         <div style="-webkit-column-span:all; height:22px; background:blue;"></div>
  11     </div>
  12     <div class="box" style="-webkit-column-span:all; margin-top:66px;"></div>
  13 </div>
  14 <script>
  15     document.body.offsetTop;
  16     document.getElementById("ancestor").style.webkitColumnSpan = "all";
  17 </script>