ef="lengths-1-ref.html"/>
<meta name="assert" content="Verify whether the different units are accepted for MathML lengths.">
<style>
  @font-face {
    font-family: TestFont;
    src: url("/fonts/math/css-units.woff");
  }
  span, math {
    font-family: TestFont;
    font-size: 10px; /* 1em = 10px, 1ex is about 5px */
  }
  span {
    position: absolute;
    display: inline-block;
    height: 10px;
  }
  #red > span {
    background: red;
  }
  #green > span {
    background: green;
  }
  /* For lh and rlh