escape quotes in css using unicode hex

css/reveal.css

@@ -239,20 +239,20 @@ body {
 	box-shadow: 0px 0px 2px rgba(0,0,0,0.2);
 }
 	.reveal blockquote:before {
-		content: '“';
+		content: '\201C';
 	}
 	.reveal blockquote:after {
-		content: '”';
+		content: '\201D';
 	}
 
 .reveal q {
 	font-style: italic;
 }
 	.reveal q:before {
-		content: '“';
+		content: '\201C';
 	}
 	.reveal q:after {
-		content: '”';
+		content: '\201D';
 	}
 
 .reveal pre {