I've been poking around in the postbit for a couple of days, and I've also looked for help on this elsewhere, but I can't seem to find an answer.
I'm wondering where I go and what code I have to alter to center align the "Message" box in the "Post New Reply/Post New Thread" prompt?
Here's a grab of how it looks on our forum:
I'd really rather it be aligned to the center, but I just can't work out how to do it.