relative-positioning-1.html

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<head>

  <meta charset="UTF-8">

  <title>Bug 1055658 - Relative positioning for ruby</title>

  <link rel="stylesheet" href="common.css">

  <style>

    body {

      line-height: 80px;

    rtc, rt {

      font-size: 100% !important;

      line-height: 1 !important;

  </style>

</head>

<body>

  <ruby style="position: relative;">

    <rb>base</rb>

    <rtc><rt>a<span style="position: relative; top: -10px;">b</span>c</rt></rtc>

    <rtc><div style="width: 50px; height: 0;"></div></rtc>

  </ruby>

</body>

</html>