Click on Edit on the menu bar at the top of the browser
Select Preferences
IF you see a minus sign (-) or a downward pointing triangle next to
Appearance in the Category column on the left, then you should already
see a list of items displayed.
IF YOU DO NOT SEE this, then click on the plus sign (+) or the
rightward pointing triangle next to Appearance to display the list.
Click on Fonts from the list of items
Next to the text For the Encoding:, select Cyrillic
from the selection list
Next to the text Variable Width Font:, select a different size from
the Size: selection list
Click on the OK button to close the Preferences window