Hi Mehdi !
Nice work on the header, I like what you did : picture selection, pattern overlay, logo... real nice
On the other hand, I am not much into this kind of background but that’s only a matter of taste... plus here, it feels a little "off", kind of old-fashionned feel (only my impression there...).
Other than that, I would have made the background of the .contenu div a bit lighter or else, darker with light text (but it might be me and my MacBookPro screen there, notice Mac rendered way different than PCs).
