Change Headings Font

Hey,
I want to change the headings font, but I am unable to do so, every time I try to change it in the "style.css", the default font will just show up. I have tried to change the paragraph font before, and it was successful. I am wondering if it's possible to change the heading font? If possible, how can I do so?

 

Go to Js > Custom.js present in your theme directory and remove the code given below

Code:

//cufone
Cufon.replace({
    hover: true
})('.add h2')('.reply',{
    hover:true
})('h1')('h2')('h3')('h4')('h5')('h6')('.add') ;

Sending image for reference