Control Navigation not Centering

I am using this plugin to rotate banners on the website http://www.lasvegasdealsdeals.com (see top of page).

In order to center the banner I have added ‘.mtphr-dnt-tick { text-align: center; }’ to the custom CSS box.

When I enable control navigation, buttons, the buttons end up appearing left justified one on top of the other. What I was hoping was that the buttons would appear centered under the banner horizontally.

Thank you for any input and all your efforts.

http://wordpress.org/extend/plugins/ditty-news-ticker/