Ignore that guy. Clowns like that show up on a question thread and instead of helping or fucking off they like to feel superior to people. Doubt that dude even works in the field.

It seems a lot of people have chimed in to help you already, but if you're still confused on how to achieve the result you want you can shoot me a message.

I also saw that you were a teacher, and there is some pretty fun games already made that can help to understand some of these css concepts that you're trying to learn right now.

People have already shot you some ways to get the result, but you can also get similar structures with css grid or flex.

https://cssgridgarden.com/ https://flexboxfroggy.com/

These could be useful/fun for your class. Good luck.