Thread:Project:Support desk/How to make '.sp-cached'-css-style working?

I haved this code snippet put in my vector.css file and in my common.css too, to be let it display on the special pages, as a colored notice, but after clearing both caches, the style doesn't effect, onl if i edit and preview the relevant files (MediaWiki:Perfcached - see for an example: http://www.knowpedia.in/wiki/index.php/MediaWiki:Perfcached) and MediaWiki:Perfcachedts (see: http://www.knowpedia.in/wiki/index.php/MediaWiki:Perfcachedts) What can I do now to achieve the desired effect?