Menu rendering or CSS Issue

Looking for some help on CSS/page formatting. I've had this issue for a while with Events Booking. On the category page, the component screws with the formatting of my main menu position. Any ideas on how to get my menu back into its proper position? I've shared the screen shot. Happy to work one-on-one with someone for site access.

Here is the URL: www.osufh.org/index.php/events/foundation-council-events.html

Thanks,
John