<a href="http://github.com/hdc-arizona/">Software</a>
<a href="{{ "/publications.html" | prepend: site.baseurl }}">Publications</a>
<a href="{{ "/people.html" | prepend: site.baseurl }}">People</a>
<a href="mailto:hdc@email.arizona.edu">Contact</a>

<a href="http://github.com/hdc-arizona/" class="topnav">Software</a>
<a href="{{ "/publications.html" | prepend: site.baseurl }}" class="topnav">Publications</a>
<a href="{{ "/people.html" | prepend: site.baseurl }}" class="topnav">People</a>
<a href="mailto:hdc@email.arizona.edu" class="topnav">Contact</a>

Add class to navigation links.
Add class to navigation links.
