diff --git a/assets/shortcode-gallery/filterbar.sass b/assets/shortcode-gallery/filterbar.sass
index b6a70a1..afc14bb 100644
--- a/assets/shortcode-gallery/filterbar.sass
+++ b/assets/shortcode-gallery/filterbar.sass
@@ -34,11 +34,12 @@
 
 
 .fulltab
-  position: absolute
+  position: fixed
   top: 0
   left: 0
   z-index: 100
   min-height: 100%
+  min-width: 100%
   background-color: #222
 
   .justified-gallery-filterbar