font size

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I don't know what I did but the font on my blog is really small that I have to zoom in (I'm on a Mac) using control and command. The blog is in my profile as my website. I don't know how to fix this and it is really annoying me because I got positive comments about the large font on my blog -_- Anyway, please have a look at my blog and tell me how to fix it! Thank you in advance!