
  {
  color: black;
  font: 3.75em/1 serif;
  margin-left: 1em;
  text-decoration: overline;
  }

  span#wrapper
  {
  color: white;
  font-size: 0.4em;
  }

  span#up {vertical-align: 0.5em;}

  span#baseline {vertical-align: 0em;}

  span#below {vertical-align: -0.5em;}
  ]]></style>

 </head>

 <body>

  <p>Test passes if there is one <strong>and only one</strong> short straight horizontal black line.</p>

  <div>
    <span id="wrapper">
      <span id="up">abcde</span><span id="baseline">fghij</span><s