Yes, the home page article is published like "featured article" and the home menu is setted like "featured articles in all categories". But the problem is not solved.

For the problema about the main menu...I don't know why the menus changes their position when the resolution change! To avoid any problem of configuration, when I started the building of this web site, I installated directly your "Joomla! pack" with the template already installated.
Please help me, thank you!