<!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-us">
+<html lang="en">
{% include head.html %}
<footer class="footer">
<small>
- © <time datetime="{{ site.time | date_to_xmlschema}}">{{ site.time | date: '%Y' }}</time>. All rights reserved.
+ © <time datetime="{{ site.time | date_to_xmlschema }}">{{ site.time | date: '%Y' }}</time>. All rights reserved.
</small>
</footer>
</div>