Reviewing instiki.css, using the TopStyle CSS editor/checker, I''ve found some errors: div.errorExplanation li { padding: 0; margin: 0; border: none; } (colon needed to be added after padding) div#MarkupHelp h3 { font-size: 90%; font-weight: normal; margin: 0 0 5px 0; padding: 5px 0 0 0; } (font-weight was defined multiple times) td { border: thin solid grey; } > should be: td { border: thin solid Gray; } .diffdel, del.diffmod { background: pink; } .diffins, ins.diffmod { background: lightgreen; } error: neither color is valid; I think you want "background-color", in which case it would have to be something like: .diffdel, del.diffmod { background-color: #FFCCCC;} .diffins, ins.diffmod { background-color: #CCFFE6;} a, a.link {font: normal normal bold 1em color:blue; text-decoration: none; } (CSS2 requires that "color: blue" be "color:blue") I hope this information, offered in good faith, is useful. -- t. ===============================================Tom Cloyd, MS MA, LMHC Private practice Psychotherapist Bellingham, Washington, U.S.A: (360) 920-1226 << TC.BestMindHealth.com / BestMindHealth.com >> << tomcloyd at bestmindhealth.com >> ================================================