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but i just registered to ask a question about dinamods and that forum is locked. anybody know why?

while i'm here...
my question is about using a module class suffix with the dinamods. how should i enter the suffix into the text field in the parameters (leading space? leading underscore?) and what is the syntax for the new bit of code in the css? i've been trying things like the following and it hasn't worked.

#modDinamodsHelper.crossingborders {
background-image: url('../images/style1/body_bg2.png');
padding: 10px 10px 10px 10px;
}