diff --git a/12/style.css b/12/style.css
index 897d2c7..171a8c1 100644
--- a/12/style.css
+++ b/12/style.css
@@ -410,6 +410,14 @@ a:hover{
 
 /* Broadcast 12.5 */
 
+.audio_05{
+  width:500px;
+  margin-top: 20px;
+  margin-bottom: 20px;
+  background-color: black;
+  border: 3px white solid;
+}
+
 #implicancies_05 {
   background-color: black;
   color: white;