If you would like a full list of these classes, search the CSS for the ".k-pdf" prefix. For a little more information about modifying such things for export, take a look at the following KB articles:
Those articles were the foundation of the above linked example. I hope this helps!
Final Note
Regarding your last comment, Community Forum posts do not carry a guaranteed response from a Progress Technical Support engineer. We do our best to monitor and respond to posts in the forums, but this is not a guarantee and can be superseded by Technical Support cases. If you need Technical Support within a specific time-frame, please open a Support Ticket instead of a forum post (see your Support Center here).
There was also a second reason for the delay, we were not legally allowed to respond to your post at the time you opened it. You can learn more here. If you have any questions about this, please contact your Customer Advocate.
Regards,
Lance | Manager Technical Support
Progress Telerik
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