Popup within CMS collection wrapper

Hiya guys. I’m aware of how Z-index works, but I’ve created a pop-up that opens when you click on a collection item list within a wrapper. However, the pop-up opens underneath the other collection list items. It’s kind of hard to explain, you’ll get the problem immediately when you’ll take a look at the website and click on one of the ‘thema’s’ when you scroll down. (sorry, the site is in Dutch).

Any advice on how to create the pop-up to cover the whole screen instead of staying underneath other items?


Here is my site Read-Only: https://preview.webflow.com/preview/samspartyfactory?utm_medium=preview_link&utm_source=designer&utm_content=samspartyfactory&preview=f796673def3184adb79cda754f6f9765&mode=preview