Cant Change Font Face in CSS

I am making a Responsive Webpage Using BootStrap.

That Have "helvetica neue" Font By Default. But It Doesnt Suit to my Web Page.

So I Had used Custom Google Fonts.

For Import:

http://ift.tt/1npysTq' rel='stylesheet' type='text/css'>

For Use this in my Webpage I had made Custom CSS In that:

body { font-family: 'Syncopate', sans-serif; }

But Still I am seeing "helvetica neue" Font on my Webpage.

Cant Anyone tell me where is the problem please.

Thanks