Your browser should be able to adjust the size of the font that you see. That way you don't have to make oversized fonts everyone else has to read and you can read everyone elses easier. Browsers may change the exact location of this setting. But if it has 'View' or a similar option that's the best place to start. FF for example has it under View>Zoom with an option for Text Only.
IE (Windows 8 version) has View and 'Zoom' and also 'Text Size' as separate options. Any other browser you'll have to look around till you find it.