Homepage Background Color Update

I need the background of my website’s home page switched to pure white. The header and footer stay exactly as they are; only the main page background changes. A clean CSS adjustment or theme setting tweak that leaves every interior page untouched will do the job. Please test the change on common screen sizes so there are no unexpected borders or scroll-bar flashes, then supply the final CSS snippet (or updated theme file) together with a quick note on where you placed it. That’s all I need to sign off.