Menu with submenus look different

Hi Ced,
I try to create a menu with submenus in TC (Last version).
Unfortunately the menu looks different if I open in Firefox(42)(looks fine) or in IE (11)(looks bad) .
See attached Pictures.
Can I do something to solve these issue?

Thanks

Thomas

Hi
give me your url to check this
CEd

Hi CEd,

It seemed to be a problem on my internal debian server running with apache.
(I don't know why)
Upload the site to my provider everything is running well, in IE and also in firefox
So the TC is not the reason for that issue.

I have to search on my internal server for the problem.

Thanks for your kind offer

regards
Tom