<!doctype html>
<html lang=en>
  <head>
    <meta charset=utf-8>
    <title>CSS Reftest Reference</title>
    <link rel="author" title="Yusuf Sermet" href="mailto:ysermet@mozilla.com">
    <style>
      rb,
      rbc,
      rt,
      rtc {
        background-color: yellow;
        font-size: 2em;
      }
      rbc {
        display: ruby-base-container;
      }
      .contained {
        width: 50px;
        height: 10px;
        background-color: blue;
        top: 0;
        left: 0;
        position: fixed;
      }
      .wrapper {
        display: inline-block;
      }
    </style>
  </head>
  <body>
    <div class="wrapper"><ruby><rt>&emsp;<div class="contained"></div></rt></ruby></div>
    <div class="wrapper"><ruby><rtc>&emsp;<div class="contained"></div></rtc></ruby></div>
    <div class="wrapper"><ruby><rb>&emsp;<div class="contained"></div></rb></ruby></div>
    <div class="wrapper"><ruby><rbc>&emsp;<div class="contained"></div></rbc></ruby></div>
  </body>
</html>