In the elements directory, create a new file named footer.php.

From the original HTML file, copy everything starting at footer_line_top to the end of the file and insert it into the new file:

<?php defined('C5_EXECUTE') or die(_("Access Denied.")); ?>
<div id="footer_line_top"></div>   
<div id="footer"></div>
<div id="footer_line_bottom"></div>   
</div>
</div>

<?php Loader::element('footer_required'); ?>
</body>
</html>

There are only two lines we have to insert. The first one is again, just a protection to disallow direct calls to our file. The second one is a placeholder for a snippet you can specify in the concrete5 dashboard. This is often used for a JavaScript statistics tracking code.

Save and close the file; there's nothing else to do in this file, as we're not having any dynamic content in this file.