Narrow column width, how to fix? [View all]

I'm trying to edit my original post but I can't because it presents it to me in an extremely narrow column width that renders it unintelligible. I was not having this problem with the old version of DU. Apparently this is a glitch in the new version of DU. Can y'all (administrators) fix this glitch, suggest a work-around, or tell me how to go back to the last version of DU where I was not encountering this problem?

-- Ron