Update jquery.realperson.css

Fixed letter-spacing issue for chrome.

Author: Zac

jquery.realperson.css

@@ -9,10 +9,13 @@
 	font-weight: bold;
 	letter-spacing: -1px;
 	line-height: 3px;
-	  /* for chrome */
-  -bracket-:hack(;
-      letter-spacing: -4px;
-  );
+}
+
+/* for chrome */
+@media screen and (-webkit-min-device-pixel-ratio:0) {
+   .realperson-text {
+   	letter-spacing: -4px;
+   }
 }
 .realperson-regen {
 	padding-top: 4px;