diff --git a/src/growl.css b/src/growl.css
index f0307c0..c8a5fb7 100644
--- a/src/growl.css
+++ b/src/growl.css
@@ -16,6 +16,10 @@
   bottom: 10px;
   right: 15px;
 }
+.growl-container.growl-fixed.middle-right {
+  top: 49%;
+  right: 15px;
+}
 .growl-container.growl-fixed.top-left {
   top: 10px;
   left: 15px;
@@ -24,6 +28,10 @@
   bottom: 10px;
   left: 15px;
 }
+.growl-container.growl-fixed.middle-left {
+  top: 49%;
+  left: 15px;
+}
 .growl-container.growl-fixed.top-center {
   top: 10px;
   left: 50%;
@@ -34,6 +42,11 @@
   left: 50%;
   margin-left: -200px;
 }
+.growl-container.growl-fixed.middle-center {
+  top: 49%;
+  left: 50%;
+  margin-left: -200px;
+}
 
 /*
  * growl-item styles