Hiding Content with Tabs

Hey everyone,

I’m trying to build something like this: Dropbox - Collections.mov - Simplify your life where you select a big category, it gives a list of a bunch of subcategories, and then that selection shows a couple of product links. I figured tabs would be the best way to do this, but I’m having trouble figuring out how to hide things when I don’t want them showing. If you look at that video, the ideal is that you select one and it only shows what’s inside of it, not leaving the other tabs above it (almost like it’s just showing new pages inside a container but the real page/url isn’t changing).

Any ideas on how I can make this happen? I keep going down different rabbit holes (interactions to show/hide content depending on what’s selected, etc.) but nothing is seeming like the right choice. I’m sorry I’m not doing a better job explaining it, but hopefully, the video helps. I don’t have anything built on the site that’s worth looking at yet, just a mess of what I’ve been trying so far. I’ll put the read-only link, anyway, but – again – the page is currently just a big mess/scratch pad. Ha!

Thanks in advance for any help you can provide!

Here is my site Read-Only: LINK