That only displays so in MSIE9, not in Opera 12. However CSS inspection in MSIE is not not comfort. Okay. Trigger is : div.diff-container {font-family } If i remove "courier" from there or put it after "monospace" - then MSIE renders more or less okay. I'd like to note: 1) u use inherit values even on root element - HTML/BODY does it have sense there ? 2) dunno about Chrome and Moz, but in Opera and MSIe use of inherit strikes out all other values. IT is hard to track which value is in effect :-/ Had to remove styles one after another. 3) inherit only supported since MSIE 8. You render out MSIE6 and MSIE 7. Would have to try tpo push for MSIE8 upgrade if install xwiki into intranet. 4) Both MSIE9 Devtools and Opera DragonFly shoes "monospace" without qoutes and Courier in quotes, regardless of case. So to me it suggests that "monospace" is standard CSS value and "Courier"/"courier" is not, probably meaning some proprietary font *name* and then browsers think how to override it (non standard vendor-specific behaviour). To support this idea: 4.0) as i remember, "Courier" was old raster 16-bit Windows font. Scaleable TTf font is called "Courier New" 4.1) If i set the value "courier new, monospace" that looks in MSIE9 exactly like "monospace" alone. 4.2) in Opera "courier new" is getting quotations exactly like "courier" 4.3) all CSS tutorials i googled enumerate 5 standard values and Courier is not among them. http://www.w3schools.com/cssref/pr_font_font-family.asp http://en.wikipedia.org/wiki/Font_family_(HTML)#Generic_font_families 4.4) Opera always had flexible font re-mapping, 10 years ago it was very needed without encodings support. http://help.opera.com/Linux/9.52/en/fonts.html The screenshots are http://imgur.com/a/UE4h5 - i feel they support this idea. The comparision of liens at http://imgur.com/a/55Xrq also suggests it. 4.5) i asked a question would see http://dev.opera.com/articles/view/fonts-for-web-design-a-primer/#comments Same effect i see on http://www.indeep76.com/Style/Example007/fonts.html Funny thing, on http://y3x.ru/sandbox/css/font-family/ it is the opposite picture. MSIE works with Courier+monospace nicely and Opera fails. -- View this message in context: http://xwiki.475771.n2.nabble.com/Diff-font-is-tp7580425p7580437.html Sent from the XWiki- Users mailing list archive at Nabble.com.