White screen

Hallo,

I hope you can help me!

I was trying to build a website for my mother in law. Everything was working fine until the idea came to change the font in Enfold. I googled and i found this topic

https://kriesi.at/support/topic/new-custom-font/

I located the file and i did some copy / paste and the result is a white page

http://www.decirkelcreil.nl

What i did after that:
-Clearing the cache of my computer
-Looking for help at webhost (they say maybe sync htaccess, dont know what that is but i pressed that button on the control panel haha)

Please tell me that i dont have to do all the work again! haha :-D

Thanks Hans