style module not working

Have been truing to change the style modules but doesnot work

modules that I am working with is

custom Html
top 7 to top 9

I have been trying to write
in module class suffix "green"
also just green.
also _green
etc. etc.
but does not work
any help

thank you.

you will need to have a space infront of green

thans

did that still not working

(space)green
also

_green
"green"

when you said space ,
how you mean it.

i mean put a space infrom ... like adding this " green" with out the "" ...