title: twitter bootstrap 3 input-group-addon not all the same size
body: <p>Basically I have a couple of input fields which have a span prepended with some text. When I try to set col-lg-4 and col-lg-8 on the input-group-addon and the input field itself, it doesn't do what I expected it to do and resize them.</p>
  
  <pre><code>&lt;div class="input-group"&gt;
     &lt;span class="input-group-addon"&gt;some text&lt;/span&gt;
     &lt;input type="text" class="form-control" id="current_pwd" name="current_pwd" /&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Can anyone help me getting the input-group-addon get the same size?</p>
  
  <p>I've created a fiddle here: <a href="http://jsfiddle.net/Dzhz4/" rel="noreferrer">http://jsfiddle.net/Dzhz4/</a> that explains my problem.</p>
  
  <p>Anyone that can shed some light please?</p>