The div#footer node should contain elements which are of secondary nature. Relevant on all pages but not important enough to keep in the top of the page from an accessibility point of view. Any navigational elements should be kept in a ul.servicenavigation. More content elements such as copyright or contact information can be added to the div#footer as needed.
<div id="footer"> <ul class="servicenavigation"> <li class="terms"><a href="/terms">Terms</a></li> <li class="press"><a href="/press">Press</a></li> </ul> <div class="copyright"><p>Copyright 2018, parentNode</p></div> </div>