How can I set up two blogs on my website to have two different widths?

Hi there,

I have two blogs on a website and I'd like one blog with posts to be set at narrow width and the other for posts to be set at a custom width. Is there an easy way to do this? 

Many thanks!

I  have a question, you are asking about the post listing pages not individual posts is that correct? If you want to set the listing page layouts differently from each other then use summary blocks for one or both. They can be set independently of each other, blog page settings are universal, and there is only one set of page settings. I am doing what you want with two blog pages now. Check it out at my site.  Click special stories on the Nav bar and you will see some post list differently than others like the Photography lessons on the Nav bar as well. 

my random views 

Thank you for responding, Derrick, but unfortunately I mean the blog page settings. I am hoping someone has some css to help me set different widths for two different blogs.