diff --git a/ui/stylesheets/csui/_csui.scss b/ui/stylesheets/csui/_csui.scss
index 0f490539034..3121e6c80d8 100644
--- a/ui/stylesheets/csui/_csui.scss
+++ b/ui/stylesheets/csui/_csui.scss
@@ -48,6 +48,15 @@ html, body {
     }
 }
 
+.loading-overlay {
+    width: 100%;
+    height: 100%;
+    position: absolute;
+    background: white url(../images/ajax-loader.gif) no-repeat center;
+    z-index: 10000;
+    opacity: 0.5;
+}
+
 // Sub-components
 @import "login";
 @import "button";