Mobile website background is too big

Hi, I designed a website but when I made the cellphone or mobile version it looks ok but when I zoom out I see big background as if its too big. So it looks ok when it first loads but then when you zoom out you get part of the white background.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Can anyone give some tips? I know it may very well be quite easy but I’m a complete noob in Webflow and web design