Fix minor scaling issue in filter drop down.

Basically prevents filter content from jumping above the dropbox when there's
enough space to do

assets/css/default.css

@@ -641,7 +641,7 @@ body.dark-theme {
 }
 
 #filters > summary {
-  display: inline-block;
+  display: block;
   margin-bottom: 15px;
 }