Forum:Monobook visualization issue

Hi, I don't understand why a centered thumb image in this page (on the bottom) in Oasis is placed beside the infobox, but in monobook is placed under it, like there was a  propriety. Can it be fixed?

As you can see in the same page, in monobook the colors of the top template (the tabs) are messed up, why's that? The template is this one, I'm sorry but it was a template created long time ago on One Piece Wiki and was updated many times, I didn't have the time to make order in the code so it's a bit messy.