ul.nav > li > a.btn:hover bug

Created by: jwoertink

using the top nav, when I try and add a link with class "btn"' it will display properly until I mouseover the link. Then it loses the bottom half of the link. The background defaults to transparent.

<ul class="nav">
    <li><a href="#" class="btn">Thing</a></li>
</ul>

Removing the li makes it work also. example:

<div class="nav">
    <a href="#" class="btn">Thing</a>
</div>

I have added in an extra style for a.btn:hover to catch the background of the button.