Get rid of the unicode symbol from selector's name and use class instead of id.

_includes/footer.html

@@ -8,7 +8,7 @@
           This site is licensed under the <a href="http://creativecommons.org/licenses/by/3.0/">
           Creative Commons Attribution 3.0 Unported License</a>.
         </p>
-        <div id="with-♥">
+        <div class="with-love">
           Demystified with &lt;3 by <a href="http://github.com">GitHub, Inc.</a>
         </div>
       </footer>

css/application.css

@@ -474,4 +474,4 @@ strong {
     zoom:1;
 }
 
-#with-♥ { float: right; clear: right;}
+.with-love { float: right; clear: right; }