title: Bootstrap input-group textarea with button
body: <p>I am trying to implement a simple submit input group. I currently have the following:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;
  
  &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"&gt;&lt;/script&gt;
  
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/js/bootstrap.min.js"&gt;&lt;/script&gt;
  
  &lt;div class="input-group"&gt;
      &lt;textarea class="form-control custom-control" rows="3" style="resize:none"&gt;&lt;/textarea&gt; &lt;span class="input-group-btn"&gt;
                                      &lt;button class="btn btn-primary"&gt;                            
                                          &lt;span&gt;Send&lt;/span&gt;
  
      &lt;/button&gt;
      &lt;/span&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>I want the 'Send' button to take up the entire height of the text area. Is this doable?</p>