Re: Office 365 website

Hi Jerry,

I notice that you are an Office 365 P plan user.

Currently, it's not available to change the font size of navigation button in P plan.
Based on the current situation, I would suggest you submitting the feedback at http://g.microsoftonline.com/0BX11EN/135. 
 
I am sorry for the inconvenience you encountered and thank you for your understanding.                                              
 
Regards,
Bourne Zhang