MyBB Community Forums

When you're browsing a MyBB forum and reading postings in it, the area where the forum user's actual posting is displayed is called what in the theme editor portion of MyBB?

I want to add a border around it.

you can use required border style property for element .post in global.css or showthread.css of the theme

eg. you can add style code like below at the bottom of the stylesheet
(edit through forum admin panel & edit in advanced mode)

.post {border: 1px solid #000;}