Column titles alignment left?

HI,
I cannot see an option to change the column title alignment. Now it seems to be center and I would like to have it aligned left. Is there a way to do that?

Reason for this is that our product names are long and now the “Product” title on top is way far on the right when we have the product names and all other column data aligned to left with this:

table.wtbpContentTable {
text-align: left;
}

How to get the column-titles also aligned left?

– Anne