Subdirectory as subdomain css problems

Hi Everyone,

I just uploaded wordpress to a subdirectory of my domain https://www.sl33py.de

I installed the blog via the alias https://drechlas.sl33py.de/(installpath)
with no problems. I can access the blog through that alias, however there is no visible theme. As if the CSS files aren’t loaded or found.

If I access it through the directory https://www.sl33py.de/drechlas/ it works as a charm (as everyone is used to :))

Does anyone know what the solution to this problem might be?

Eagerly awaiting your answers.

Jorg