How to increase the font in "Classmates"?

When communicating in the social network "Odnoklassniki" uvisually impaired or just tired people occasionally there is a problem: the font size in the messages is too small. A special button, through which you can solve this problem, is not on the site itself. So the question arises - how to increase the font in "Classmates"?

There are two proven ways to solve this problem with a small, unreadable font:

Simultaneously: press and hold the button Ctrl and spin the wheel on the mouse in the direction away from you.
Press and hold the Ctrl key and press the "+" button on the keyboard to increase the font to the required size.

After the manipulations, the font will change to the desired size. Enjoy your communication!