Problem with suffix COLOR1 and COLOR2

Module class suffixes won't work. period.
I tried every single one in a lot of different positions.
Unfortunately, the suffixes won't work.

I am using Style 3 and I tried to change some settings in this style css only.
Is it possible that the CSS style is using the css1-style sheet instead?
But why won't it wor then if I try any of the suffixes. I tried _menu, HOT, FEATURED, RECCOMENDED as well, they all won't work.
What am I doing wrong?
The website is currently under development and available under new.servicesciencefactory.eu

Can you please help me?

Best, Felix

Hi, hmm.
It sounds that you are doing something wrong because in demo and in quickstart version all works fine.

...have you added <space> before name of suffix?

You generated code (see in preview mode) must look like this to take effect.

Thx. the <space> was the issue. Now I got it.