css calendar syntax error

[buc]

Hi, using CSS can make the calendar change color according to a specific choice eg:

.fabrikEvent.label.Permesso
{
background-color:red !important
color:black !important
}
They can, however, when the label are numbers as in the example below, or a point.

.fabrikEvent.label.Permesso.104.familiari
{
background-color:green !important
color:black !important
}

.fabrikEvent.label.Permesso.B.O.
{
background-color:green !important
color:black !important
}

I think it's a syntax problem

Can you help please?

Thanks