diff --git a/style/main.css b/style/main.css
index 3983108..6604104 100644
--- a/style/main.css
+++ b/style/main.css
@@ -499,6 +499,11 @@ main.not-found {
   margin-top: 0.4rem;
 }
 
+/* display:block above would beat the hidden attribute */
+.voice-preview[hidden] {
+  display: none;
+}
+
 /* links inside markdown descriptions */
 .alt-description a,
 .feature p a {