Apparently, I have a screen which is a bit larger (1080p), because I see the same amount of empty space on both sides of the website.
Well, how can I remove or resize that empty spaces?
If you don’t want to show blank space, what do you want to fill it with? Do you want your website content to stretch across the full width of the page? Not only will that probably look bad on larger screens, I also don’t think the site builder supports flexible width websites.