My Navigation Menu and the Text in My Big Ttile Section Disappeared

I had some suggestions from possibly Hummingbird that I took, and I can't remember which onw it was (But it was tonight, 10/16/16) and my header navigation menu just disappeared, along with all the text in my Big Title Section (Zerif Pro)
PLEASE help me get it back .. I've tried everything I can think of ...
http://www.greenvillechoralsocietygala.com