Board Thread:General Discussion/@comment-5919002-20121228004023/@comment-4139585-20130101131727

You should try the HideRail script. It has an option to hide the rail making the content area 1010px wide. It has another option to make the full page, with the rail, 1200px wide, so with both these options selected you should have a content space of 1200px. You can always deselect these when you want. Note that this is a personal only script and can be placed in your Special:MyPage/global.js on this wiki (which affects all wikis) or your Special:MyPage/wikia.js on one wiki (which only affects that wiki).