Hi Fiona__Wang,
Based on your description, could you tell me the meaning of >>header title in a table<<? Did you mean the top title of the table or the first cell of the table? I wonder to know did you wonder to keep the content in the same line but no wrap.
And you wonder >>set the title with a tilted angle<<, do you mean dont parallel to horizontal or any other requirement, for example you wonder to add a diagonal line to the cell?
Could you be a bit more precise explain your problem or you can upload a schematic about your requirement so that I can get more accurate solutions to this problem. Im glad to help you and follow up your reply.
Regards,
George Zhao
TechNet Community Support