title: How to center buttons in Twitter Bootstrap 3?
body: <p>I am building a form in Twitter Bootstrap but I'm having issues with centering the button below the input in the form. I have already tried applying the <code>center-block</code> class to the button but that didn't work. How should I fix this?</p>
  
  <p>Here is my code.</p>
  
  <pre><code>&lt;!-- Button --&gt;
  &lt;div class="form-group"&gt;
      &lt;label class="col-md-4 control-label" for="singlebutton"&gt;&lt;/label&gt;
      &lt;div class="col-md-4"&gt;
          &lt;button id="singlebutton" name="singlebutton" class="btn btn-primary center-block"&gt;
              Next Step!
          &lt;/button&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>