I'm new to CSS, and am having lots of problems getting things to look right.

I'd like someone to take a look at http://3e.org , http://3e.org/dmd/
, http://3e.org/anna/ , and http://3e.org/hosting/ (four types of
pages that use the same two-column design), and fix my HTML and CSS so
that it looks reasonably good even when the browser is resized pretty
small, or when the text size is increased/decreased by the user. By
"looks good", I mean things shouldn't all of a sudden be in the wrong
column, and text shouldn't be wrapping two characters to a line. You
may use your best judgement.