diff --git a/css/app.css b/css/app.css
index 49a8bb297..68fb436b7 100644
--- a/css/app.css
+++ b/css/app.css
@@ -1322,7 +1322,10 @@ div.typeahead a:first-child {
 
 .shaded {
     z-index: 2;
-    position: relative;
+    position: absolute;
+    height: 100%;
+    width: 100%;
+    overflow: auto;
 }
 .shaded:before {
     content:'';