Thank you !
So you should try with default theme activated and with all other plugins deactivated, because I think it’s a conflict problem, most probably with the theme. I’ve had a short experience with Weaver and I’ve noticed that’s a very invasive theme.
Well, I tried, and I still don’t see borders or shadows… 🙁
I think I’ll uninstall NexGen, thanks for your help !
Thank you tizz.
The problem is on all images. For example :
http://sansleconsnipunitions.fr/le-pouilleux-pas-massacreur/
I tried in the plugin css custom too (gallery/other options/styles)