third_party/WebKit/LayoutTests/fast/multicol/dynamic/remove-and-insert-block-before-spanner.html

   1 <!DOCTYPE html>
   2 <script>
   3     onload = function() {
   4         document.body.offsetTop; // trigger layout
   5         var elm = document.getElementById('elm');
   6         elm.style.display = 'none';
   7         document.body.offsetTop; // trigger layout
   8         var elm2 = document.getElementById('elm2');
   9         elm2.style.display = 'block';
  10     }
  11 </script>
  12 <style>
  13     .spanner { -webkit-column-span:all; }
  14 </style>
  15 <p>Test removal of of a block right before a spanner, then insertion of another block at the same position.</p>
  16 <p>You should see two lines with the word "PASS" on a lime background below. Letter spacing is expected to vary.</p>
  17 <div style="-webkit-columns:4; -webkit-column-gap:0; overflow:hidden; width:4em; background:lime;"><div id="elm" style="background:red;">F<br>A<br>I<br>L</div><div id="elm2" style="display:none;">P<br>A<br>S<br>S</div><div class="spanner">PASS</div>
  18 </div>