Small Print size and Website shrinkage.

Howdy everyone,


I was using my Windows 8.1 Computer when checking Outlook E-Mails, when the Website Fonts suddenly became smaller, the Websites as well.
Obviously a settings issue.
Can someone explain how to restore Fonts etc...to normal size ?.


These types of problems usually happen whenever there's a Windows update....


Does the Windows 8.1 Update 1 occur automatically or do I have to purchase something ?.
Are these updates equal to the old 'Service Packs' ?.


Cheers for now.


TONY.