Bombadil column width

[drlippman]

On screens/windows with 768px<min-width<940px, the div#content box is set to a 520px width, which is too small for some content.

For screens below 768px, the column width fills the screen width, so might be as large as 768px. For screens over 940px the column width is 720px.

It might be better to leave the column width for 768px<min-width<940px screens at 720px.