Episode 10: RapidWeaver CMSs & upgrading to Stacks 3

During this episode, you mentioned in an answer to a question that @yabdab’s Cartloom could function as a catalog, if CSS was used to hide the “add to cart” button. I have searched, and made valiant attempts, but I can’t seem to get that button hidden. Does anyone have any experience with this? (I’d also like to hide the price.)