title: Full width input-append search button
body: <p>How do I make this search form full width like the button below it?</p>
  
  <p><img src="https://i.stack.imgur.com/dYj6L.png" alt="Example"></p>
  
  <pre><code>&lt;form class="form-search"&gt;
    &lt;div class="input-append"&gt;
      &lt;input type="text" class="input-small search-query"&gt;
      &lt;button type="submit" class="btn"&gt;Search&lt;/button&gt;
    &lt;/div&gt;
  &lt;/form&gt;
  </code></pre>