allout-danger" id="callout-glyphicons-empty-only">
    <h4>Only for use on empty elements</h4>
    <p>Icon classes should only be used on elements that contain no text content and have no child elements.</p>
  </div>
  <div class="bs-callout bs-callout-info" id="callout-glyphicons-location">
    <h4>Changing the icon font location</h4>
    <p>Bootstrap assumes icon font files will be located in the <code>../fonts/</code> directory, relative to the compiled CSS files. Moving or renaming those font files mean