width: 1em;
      height: 3em;
  }
</style>

<body>
  <p>PASS if the boxes with dark colors are NOT floating next to the boxes with
    light colors.</p>
  <div id="wrapper">
    <div>
      <div id="container" class="containment">
        <div><div class="float left" style="background: lightblue"></div></div>
        <div class="float right" style="background: lightyellow"></div>
        <div>XX XXX XXXX X</div>
      </div>
      <div class="float left" style="background: blue"></div>
      <div>
        