Second search on page is not styled/themed

I’m trying to use two searches on the same page, but the theming/styling for the second is not working. You can see this at https://foxylearning.com/buy-a-coursepack/

I’ve replaced my theme’s default search icon in the header with an Ajax Search Pro search, and that works great. On this page, though, I’m trying to include a different search using the Underling Blue Vertical theme, but neither the search box nor the results are getting styled correctly. Is there a way to get this to work? Thanks in advance for any help and thanks for an awesome plugin. 🙂