Howdy andyjohnston,
It seems like your theme has custom styles specific to our plugin. Likely your theme developer has not yet updated the theme since our latest 3.6 release. You should alert them to this issue so that they can fix it forthwith. We unfortunately can not provide code to integrate with themes beyond general snippets, the theme specific stuff needs to be done by you or the theme developer. But, let the theme developer know. I bet they will be eager to fix since they clearly have gone out of their way to make the theme look nice with our plugin. Cheers!
– Brook