diff --git a/12/style.css b/12/style.css
index ca57a98..2a6eeb4 100644
--- a/12/style.css
+++ b/12/style.css
@@ -55,8 +55,7 @@ body{
 }
 
 
-.week_01{
-
+#week_01{
   margin:40px;
   padding: 40px;
   border-style:dotted;
@@ -65,7 +64,8 @@ body{
   margin-top:30px;
   max-width:70%;
 }
-.week_02{
+
+#week_02{
   font-family: pitchoun;
   font-size:20px;
   margin:40px;