<!DOCTYPE html>
<html class="reftest-wait">
<head>
<style>
  html, body {
    margin: 0;
    padding: 0;
  }
</style>
</head>
<body>
  <audio id="tweakme" controls></audio>

  <script>
    function doTest() {
      setTimeout(() => {
        let tweakme = document.getElementById("tweakme");

        // Make the audio element extremely skinny, flush layout, and then revert
        // that change:
        tweakme.style.width = "1px";
        tweakme.offsetHeight; // flush layout
        tweakme.style.width = "";
        tweakme.offsetHeight; // flush layout

        document.documentElement.removeAttribute("class");
      }, 300);
    }

    window.addEventListener("MozReftestInvalidate", doTest);
  </script>
</body>
