User blog comment:Susanolivia/Fixed Width, Sidebar, and the Removal of Monaco/@comment-712987-20101002131027/@comment-349903-20101003184142

On my regular screen resolution, those tables are too big for the article area on Monaco too. That’s one of the problems with variable width - something that looks right for you will look wrong on another monitor. The fixed width may need you to make some adjustments to articles, but will mean that you can be sure that what you write will always look good to the vast majority of viewers.