diff --git a/4.css b/4.css
index 63c8c65..3cceb08 100644
--- a/4.css
+++ b/4.css
@@ -31,6 +31,7 @@ a.btn{
 	border: 3px solid #ffffff;
 	background-color: #ffffff;
   	border-radius: 15px;
+	scroll-behavior: smooth;
 }
 a.btn:hover, .btn:focus {
   	border: 3px solid #0077ff;