<div class="container">
    <div class="span-24">
        The header
    </div>

    <div class="span-4">
        The first column
    </div>
    <div class="span-16">
        The center column
    </div>
    <div class="span-4 last">
        The last column
    </div>

    <div class="span-24">
        The footer
    </div>
  </div>