Add monospace fallback for titles

static/sexy.css

@@ -217,7 +217,7 @@ a:hover {
 	top: 50%;
 	transform: translate(-50%, -50%) scale(1, 1);
 	z-index: 1;
-	font-family: 'Source Code Pro';
+	font-family: 'Source Code Pro', monospace;
 	transition: 0.4s ease-out;
 }