diff --git a/hogent.css b/hogent.css
index c8231df..3c47435 100644
--- a/hogent.css
+++ b/hogent.css
@@ -83,7 +83,7 @@ body {
 .reveal video,
 .reveal iframe {
   max-width: 95%;
-  max-height: 90%; }
+  max-height: 80%; }
 
 .reveal strong,
 .reveal b {