Not sure whether the following problem is caused by the CSS not working as well, but I have the following issue with your plugin:
In Firefox, the page names are being displayed in the dropdown menus of my navigation bar, however in Internet Explorer, the dropdown functionality works, but the page names aren’t displayed. I am guessing that something in your code doesn’t work in IE.
Could you please check? My URL is https://www.spiritofsomeday.com
Cheers!