Nevermind, I got it!! Thank you so much!
Where exactly should I put the css code?
It didn’t work. The width is changed on all pages, but also the blog page and the sidebar is gone. I want the side bar to remain on the blog page and the other pages to be full width.
Actually, I want to leave the home page alone, and change the width on the other pages.
Thank you for your reply! 🙂 I actually want the first page to keep the sidebar. The other pages are perfect with that code, but how do I keep the sidebar on the home page?