Code to change page width/padding on blog posts

Hi there, 

I'd like to see if there's a code to change the padding on blog posts that applies to all of them on the site.

Right now, there's too much and I'd like to decrease it. 

Thank you for your help!

Hi,

Can you share link to a blog post? We can check easier

Hi there- sorry so late on my response! I figured out how to do it right within the blog post settings and it applied to all blog posts. Thank you!