make error page z-index 11

css/organizr.css

@@ -252,7 +252,7 @@ body.stop-scrolling {
     height: 100%;
     position: fixed;
     display: none;
-    z-index: 10;
+    z-index: 11;
 }
 
 img.lazyload.tabImages {

css/themes/Organizr.css

@@ -298,7 +298,7 @@ a.mytooltip {
   height: 100%;
   position: fixed;
   display: none;
-  z-index: 10;
+  z-index: 11;
 }
 .error-body h1 {
   font-size: 210px;