thank you very much for your compliments and your help.
The first issue is solved. Now the Dropdown Menu appears below a width of 915px. Perfect!
But the second issue is, that below a width of 974px the page resizes causing the menu to reposition to the left (behind my logo). Do you have any solution for that?
Thanks a lot for this awesome support here in the board!
I did so. I exported the SQL file, changed the entries wp_siteurl and wp_home in wp_options to the new domain. everything works – just the theme options are reseted to zero.
The database works fine also and there is a connection.
@peterash: Im looking for exactly what you did on your webpage. How did you manage to do so?