diff --git a/style.css b/style.css
index 6e3ca8411..ee39a57b7 100644
--- a/style.css
+++ b/style.css
@@ -646,6 +646,8 @@ table.popup-table .link{
     margin: auto;
     padding: 2em;
     z-index: 1001;
+    max-height: 90%;
+    max-width: 90%;
 }
 
 /* fullpage image viewer */