diff --git a/static/css/style.css b/static/css/style.css
index e446932..be0a1b5 100644
--- a/static/css/style.css
+++ b/static/css/style.css
@@ -623,7 +623,8 @@ iframe#markdown {
     z-index: -2;
     top: 0;
     width: 100%;
-    min-height: 100%;
+    height: 100%;
+    object-fit: cover;
 }
 
 .credit {