Thanks. Just to clarify, as I am _very much_ a novice here, you are saying that:
a) the change should be in the stylesheet, not the searchform.php
b) the relevant formating is for the sidebar ("#s" = "#sidebar"), not the search box
One additional note: in the CSS the #sidebar includes "margin: 0 14px 0 5px;" and the text in the sidebar does seem to be 5 px off the margin of the sidebar, as opposed to the search bar, which is flush with the margin.
So, can you confirm a) that the line you indicated is correct, and b) where it should be placed? Thanks!