title: Fieldset breaks the grid?
body: <p>I just started with Blueprint, so don't bash me :-)
  Here's my code, a simple two columns layout:</p>
  
  <pre><code>&lt;body&gt;
    &lt;div class="container showgrid"&gt;
      &lt;div class="span-24 last"&gt;
        &lt;h1 &gt;Logo Here&lt;/h1&gt;
      &lt;/div&gt;
      &lt;div class="span-16"&gt;SlideShow&lt;/div&gt;
      &lt;div class="span-8 last"&gt;
        &lt;form&gt;
          &lt;fieldset &gt;
            &lt;label for="email"&gt;Email&lt;/label&gt;
            &lt;input type="text" id="email" name="email" class="title"&gt;
          &lt;/fieldset&gt;
        &lt;/form&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>You can see the result here (on Firefox 3):</p>
  
  <p><a href="http://img600.imageshack.us/i/screenwr.png/" rel="nofollow">http://img600.imageshack.us/i/screenwr.png/</a></p>
  
  <p>As you can see, the fieldset breaks the grid. If i drop the fieldset, the form gets better, altough it's still one pixel wider. What am I doing wrong?
  Thanks for the help.</p>