Cannot find CSS class 'em-bookings-ticket-table'

Hi,

I am trying to style the booking form so that the columns for tickets are spaced out more.

You can see here http://www.ilcc.lu/events/wills-and-inheritance-in-luxembourg that the columns for the tickets are too close together.

However, I cannot find the CSS classes (em-bookings-ticket-table) that define the layout for this table. I have looked in all of the CSS files but cannot see them there, also not found using the Notepad Find function.

Can somebody point me in the right direction.

Many thanks

Philip

http://ww.wp.xz.cn/extend/plugins/events-manager/