<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<title>Fraction parameters</title>
<style>
  math, mspace {
    font-size: 20px;
  }
  @font-face {
    font-family: denominatorgapmin4000-rulethickness1000;
    src: url("/fonts/math/fraction-denominatorgapmin4000-rulethickness1000.woff");
  }
  #reference {
    background: green;
  }
  #frame {
    position: absolute;
    border-top: 4px solid black;
    border-bottom: 4px solid black;
    width: 100%;
  }
</style>
<script src="/mathml/support/fonts.js"></script>
<script>
  function runTests() {
    var div = document.getElementById("frame");
    var refBox = document.getElementById("reference").getBoundingClientRect();
    div.style.top = `${refBox.top-2}px`;
    div.style.height = `${refBox.height-4}px`;
    document.documentElement.classList.remove('reftest-wait');
  }
  window.addEventListener("load", () => { loadAllFonts().then(runTests); });
</script>
</head>
<body>
  <p>
    This test passes if the blue squares are aligned:
  </p>
  <p>
    <math style="font-family: denominatorgapmin4000-rulethickness1000;">
      <mspace height="2em" depth="20em"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace id="reference" width="3em" height=".5em" depth=".5em"/>
      </mfrac>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="1em" height=".5em" depth=".5em" style="background: blue"/>
      </mfrac>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="1em" height="1em" style="background: blue"/>
      </mfrac>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="1em" depth="1em" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <div id="frame"></div>
</body>
</html>
