<!DOCTYPE html>
<html class="reftest-wait">
  <head>
    <script>
      function f() {
        document.body.style.fontSize = "20px";
        // End the test asynchronously so we get a chance to do a reflow before
        // that happens.
        setTimeout("document.documentElement.className = ''", 0);
      }
    </script>
    <style>
      span { display: inline-block; width: 1em; height: 10px; background: green; }
    </style>
  </head>
  <body onload="f()" style="font-size: 10px">
    Test
    <div style="position: absolute; left: 0; width: 25px; height: 0; top: 0;">
      <span></span>
      <span></span>
    </div>
  </body>
</html>