<!DOCTYPE html>
<html>
  <meta charset="utf-8">
  <title>CSS Multi-column Layout Reference: Test floats in a multi-column container with column-span</title>
  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
  <link rel="stylesheet" href="/fonts/ahem.css">

  <style>
  article {
    width: 300px;
    font: 1.25em/1 Ahem;
  }
  .float-left {
    float: left;
    color: black;
  }
  .float-right {
    float: right;
    color: navy;
  }
  .column-span {
    clear: both;
    color: pink;
  }
  </style>

  <article>
    <div class="float-left">black</div>
    <div class="float-right">navvy</div>

    <div class="column-span">Pink</div>

    <div class="float-left">black</div>
    <div class="float-right">navyy</div>
  </article>
</html>