Custom hero slider with image in background cms

hi, i want a custom hero slider, which will look like this one: Sloane House, London | Hilton & Hyland but i tried it out and i only got this: see read-only-link. which you only will see in the public version. It will show exactly the count of the multiple images (cms) which i got on each site on each property, because all properties are different. but i want it like it is now but with the full image inside. How can I do this? Hope somebody knows this already and can help me with this problem.

Here is my site Read-Only: Webflow - RAHMANN