diff --git a/12/style.css b/12/style.css
index b74f17b..1fb6dfe 100644
--- a/12/style.css
+++ b/12/style.css
@@ -215,6 +215,12 @@ a:hover{
   	margin-bottom: 20px;
 }
 
+#shell_03 iframe {
+  width: 100%;
+  height: 100%;
+  border: none;
+}
+
 #torusKnot {
 	height: 40em;
     width: 100%;