Centering images and text

Hi all,

I'd like to know if it was possible to specify that text or images get 
centered in PmWiki ? I've tried some stuff, but it seems like this is 
not possible with CSS, and that PmWiki does not have markup for block 
aligment.

Any ideas ?

TIA,

 -- Sébastien

--
«Il vaut mieux suivre une voix stupide que l'on connait,
plutôt qu'une intelligente que l'on ne connait pas.»
<http://www.type-z.org>                -- No comment on Jacques C.