Trouble with size of Font, Need Help!

Hi there,

Recently the size of the font on my site has ballooned in size making it unreadable. I have tried fiddling around with the style.css page with no luck at all.

Here is my site: https://www.reverbism.com/

In other browser lke IE and Opera the font is huge and is also huge in Firefox but I have the option of adjusting that but I would rather that people who visit the site not have to adjust ther browsers to visit my site.

Can anyone help Please?