title: HTML colspan in CSS
body: <p>I'm trying to construct a layout similar to the following:</p>
  
  <pre><code>+---+---+---+
  |   |   |   |
  +---+---+---+
  |           |
  +-----------+
  </code></pre>
  
  <p>where the bottom is filling the space of the upper row.</p>
  
  <p>If this were an actual table, I could easily accomplish this with <code>&lt;td colspan="3"&gt;</code>, but as I'm simply creating a table-like <em>layout</em>, I cannot use <code>&lt;table&gt;</code> tags. Is this possible using CSS?</p>