Indeed, all the replies are a solution to my problem; so thank you!
Browsing the web I found an interesting site related on how the browser
loads the stylesheets:
http://www.stevesouders.com/blog/2009/04/09/dont-use-import/
Conclusion: for performance improvements use link not import... but don't
forget that "premature optimization is the root of all evil".
--
View this message in context:
http://xwiki.475771.n2.nabble.com/CSS-content-placeholder-when-customizing-…
Sent from the XWiki- Dev mailing list archive at
Nabble.com.