Horizontal Scroll on Gallery (manual scrolling)

Community resources
1

Dear Webflow Community,

I’m new to Webdesign and I’ve a simple Problem that I just can’t seem to fix:

https://preview.webflow.com/preview/mgi-92ee64?utm_medium=preview_link&utm_source=designer&utm_content=mgi-92ee64&preview=1205bdab4e167efae45797b32360683a&mode=preview

In the Image Gallery in “Section 1 (Hero) / GalleryHZ” I’m trying to implement the Horizontal Scroll effect however I would like the Gallery to also be scrollable horizontally manually.
I’ve tried a HTML Embed adding the following code:

<style>
.GWRAP {
 overflow-x: auto;
 white-space: nowrap;
   }
 </style>

It doesn’t seem to work though.

I’ve tried the same thing on a blank website recreating the problem with the exact same HTML Embed and there it seems to work just fine:

https://preview.webflow.com/preview/haverkamp?utm_medium=preview_link&utm_source=designer&utm_content=haverkamp&preview=7d3f8be66759af7817b872c5e76b80c3&mode=preview

I’ve ruled out the following problems by experementing:
-I tried turning off Interactions
-I tried placing the HTML Embed in almost any sensible location
-I tried taking the Gallery out of its Parent Element positioning it right underneath the Body Tag so I don’t think that the Parent Divs have anything to do with it.

I bet it is a really simple solution but I just can’t wrap my head around could someone please take a look ?

Thanks
David