Re: Change default styles when editing articles
You can add your CSS rules in the "Custom CSS" input area under the Look & Feel admin page's customization tab (tiki-admin.php?page=look#contentadmin_look-5). These CSS rules will override the Tiki default and theme rules. You can use your browser's web tools/DOM inspector to check exactly what CSS is currently applied to the part of the page you want to change.
-- Gary