My DIV block has no height no matter what I do


Thanks for any help. I’m trying to create a grid with 12 cards that flip. Looks perfect on smaller screens however it wont act responsively because my div blocks seem to have no height rather than fitting to the size of the content within it. I need the gaps to be consistent because all the tiles make up an image. Please help! Sorry if this is a bad explanation.

Thanks in advance!

Here is my site Read-Only: Webflow - StimWrx