diff --git a/files/main.css b/files/main.css
index 371250ce8cca9282297be3cc85cb023271ee5c35..f269254144e69c084508b8dd9c90f03ba9614461 100644
--- a/files/main.css
+++ b/files/main.css
@@ -383,7 +383,6 @@ iframe {
 	width: 100%;
 	height: 100%;
 	overflow: auto;
-	display: none;
 }
 
 #viewer {