diff --git a/12/style.css b/12/style.css
index 6823b5b..4de81d6 100644
--- a/12/style.css
+++ b/12/style.css
@@ -409,4 +409,15 @@ a:hover{
       color: black; 
       font-family:"Roboto Mono";
       font-size: 15px;
-   }
\ No newline at end of file
+   }
+
+/* Broadcast 12.5 */
+
+#implicancies_05 {
+  
+  background-color: black;
+  color: white;
+  
+  
+  
+  }
\ No newline at end of file