--- a/toolkit/themes/linux/global/notification.css
+++ b/toolkit/themes/linux/global/notification.css
@@ -12,16 +12,26 @@ notification {
 %endif
   text-shadow: none;
 }
 
 notification[type="info"] {
   color: -moz-DialogText;
   background-color: -moz-Dialog;
   -moz-appearance: none;
+  border-top: 1px solid ThreeDShadow;
+  border-bottom: 1px solid ThreeDShadow;
+}
+
+notificationbox[notificationside="top"] > notification[type="info"] {
+  border-top-style: none;
+}
+
+notificationbox[notificationside="bottom"] > notification[type="info"] {
+  border-bottom-style: none;
 }
 
 notification[type="critical"] {
   color: white;
   background-image: linear-gradient(rgb(212,0,0), rgb(152,0,0));
   -moz-appearance: none;
 }