diff --git a/css-pseudo-4/Overview.bs b/css-pseudo-4/Overview.bs
index 2e04e87c9d6..cb0497fb9af 100644
--- a/css-pseudo-4/Overview.bs
+++ b/css-pseudo-4/Overview.bs
@@ -1328,14 +1328,12 @@ Expandable contents of details element: the ''::details-content'' pseudo-element
 
     <pre class="lang-css">
 details::details-content {
-  display: block;
   opacity: 0;
-  transition: content-visibility 300ms allow-discrete step-end, opacity 300ms;
+  transition: content-visibility 300ms allow-discrete, opacity 300ms;
 }
 
 details[open]::details-content {
   opacity: 1;
-  transition: content-visibility 300ms allow-discrete step-start, opacity 300ms;
 }</pre>
   </div>