Can`t change module style ;/

Hi, to the last few days trying to change the properties of the module. I'm trying to type the command with "module variations," but unfortunately does not work;/ What am I doing wrong? I type the command in the CSS module suffix class.

Hi
Can you describe or show some screen about what you want to achieve ?

Thank you for ur answer. It`s done. The problem was a "space" before a command. (blue - shout be _blue).

Great to hear that you solve it.