User blog comment:Sannse/Sneak Peek at the New Look - Themes/@comment-2106481-20100921162148/@comment-8-20100924002413

Yes, you can make changes via your personal CSS, including of the page width. One thing to consider though is that you would be viewing the page at a different width to your readers. A table that looks right for you could be too wide for them. This problem also happens with variable width sites - part of the reason for fixed width in the first place