Hi @27shutterclicks Thanks for reaching out and sharing your thought process & steps you took!
Unfortunately, we haven't yet enabled the ability to add your own css classes 
Custom css, as described here, is doable in Retool web apps and it's often a helpful workaround. That said, it can be tricky. You have to do some digging to find the proper css class, and it's possible that as the product changes, the classes could change (without warning).
We generally suggest relying on the natively supported styling options when possible & submitting feature requests for additional options.
I've linked our internal ticket where we're tracking requests for adding custom css classes to components and the ticket where we're tracking requests for icon sizes in the table. If either ships, I'll post back on this thread!