Crosstab Separator

Hi,

I need to have a separator between two columns in a crosstab.

My idea is to have a border only on a specific column in the crosstab using for example the below CSS.

My question is how to define a specific column in the Crosstab using CCS?

.sapzencrosstab-HeaderCellDefault {

border: 1px solid black !important;

}

Thanks,

Anders