This was an old thread, but the solution does not work with the new version of Atahualpa, it now says, " Where are the 'Content ABOVE Loop', 'The LOOP' etc. options?They are now 'hardcoded' into Atahualpa's <code>index.php</code>. To edit the loop or to add custom code before/after the loop, manually edit <code>index.php</code>."

When I tried pasting the code provided, it did not work. Sorry if I did not look harder, and thank you for any advice!

Just use CSS in CSS Inserts