I would like to change the widht content single posts without altering the widht of the rest of the pages.
At the moment my widht content is 1000 px and i would like to change widht content post from 1000 px to 800 px as i told you wihtout modifying the layout widht.
How could i do it? I have been trying to find the solution but i ended up burned out.
I hope you can help me