layout/reftests/bugs/571347-3.html


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<!DOCTYPE html>
<html>
  <head>
    <style>
      div:not(.foo) { display: none; }
    </style>
  </head>
  <body onload="document.getElementById('x').className = 'foo'">
    <div id="x">This text should appear</div>
  </body>
</html>