layout/style/crashtests/1455108.html

   1 <!doctype html>
   2 <style>
   3   div::first-line {
   4     color: yellow:
   5   }
   6   .foo span {
   7     display: none;
   8   }
   9   .foo::first-line {
  10     color: red;
  11   }
  12 </style>
  13 <div><span>Yo, I'm a first-line<span> really</span></span>
  14 <script>
  15   document.body.offsetTop;
  16   document.querySelector('div').classList.add('foo');
  17 </script>