There will probably be overflow:hidden specified on the wrapper container for the theme. If you aren’t comfortable with CSS, then it may not be a good idea to mess with that as it’s proably set to overflow:hidden for a reason and changing it to auto or something similar will likely break something else in the theme.
I do these sorts of fixes for our [iurl=https://geek.hellyer.kiwi/services/premium-support/]Premium Support[/iurl] members, but it’s way too time consuming to do for free sorry as there’s likely to be a bunch of other problems crop up in fixing the first problem.