This worked - thanks @christyprice. But...instead of doing this, do you know if there a way to insert a background colour - not on an individual blog post, but one that appears consistently/automatically whenever you write a new post? I know I can insert a background for the header/logo/navigation section, but it has to be done manually each time I create a blog post. Would love it to just be there each time I create a new post. Possible?