Text with a strange shadow

Hello all.
For starters apologize for my language - is weak.
I have a small but a big problem from fonts.
http://www.kasetonywarszawa.pl/index.html - Basic WWW.
http://piechurzy.pl/kasetony/ - WWW which have bootstrap and my CSS.
And here the question of why in my version of this font has blur/shadow?
I checked all probably ...
Anyone have an idea?