Please help me.. my blog font size become small..

I had searching on google for more than 2 days to find the solution regarding this problem. I did not know why my blog font size suddenly turn smaller than normal. I tried to rename my blog url than it works fine. But when I rename back the font turn to small back.So, I thought that the problem might not come from the stylesheet.Someone please tell me what’s the problem with my blog.. this is the url

http://blog.mahadirlab.webuda.com/en/