My tables are shifted to the left unwanted?

I have tables which are 90% in width in a K2 article. However, when displayed on the front end they are not centered (?)

Please let me know if you have any ideas on how to solve this?

My site is not live yet so I can not give you a link here in the open forum. Let me know if you can assist and I will PM you login credentials for you to view at it live.

Hope to hear from you soon.

Could you provide me URL with this view? It is really hard to check what may be wrong in CSS without seeing this code.