Site title not recognizing ´Lobster´ font

Hi, everybody! I’ve been using Simple Catch for some time, and I love it. But without me changing any codes, it simply stop showing my site title with Lobster font (which i really like). Here´s my code:

#site-title {
	font-size: 45px;
	font-family: 'Lobster';
	font-weight:normal;
	padding-bottom:0px;
}

And this is the website: http://gatinhobranco.com/ What could be wrong? Thanks!!!