Changing Default Font on Outlook Web Access ?

[GW]

Hi,

I was wondering anyone could assist me.

Our company wishes to change the default font from Arial to Tahoma in
Outlook Web Access, however, I am unsure whether it can be done, and
if so, how it can be done.

If it can be done, could someone please supply some instructions on
how to do it ?

Any help would be appreciated.

Thanks in advance.

GW