third_party/WebKit/LayoutTests/fast/multicol/dynamic/insert-spanner-pseudo-after.html

   1 <!DOCTYPE html>
   2 <script>
   3     onload = function() {
   4         document.body.offsetTop; // trigger layout
   5         document.getElementById('elm').className = "x";
   6     }
   7 </script>
   8 <style>
   9     .x::after { display:block; -webkit-column-span:all; background:yellow; content:".........."; }
  10 </style>
  11 <p>Test adding an ::after pseudo element that's a spanner.</p>
  12 <p>There should be two rectangles with identical sizes below. The first one should be blue
  13     with nothing inside. The second one should be yellow with some dots inside.</p>
  14 <div style="-webkit-columns:4; line-height:100px; background:blue;">
  15     <span id="elm">&nbsp;</span>
  16 </div>