How To Change a Site Width?

I’m creating a site using Wix for my business and even though everything is in the 980 pixels grid there is still an option to scroll right in my site. It looks really bad if you scroll right because there is nothing there and the template doesn’t go this far. Is there a way to delete the space in there or lock the option to scroll right? Most pcs I checked the site in doesn’t even go this far but still has the option to scroll right.

You probably have a hidden element there. Check it carefully.