added new line

src/index.html

@@ -9,6 +9,7 @@
   <link rel="icon" type="image/x-icon" href="favicon.ico">
   <link href="assets/styles.css" rel="stylesheet">
 
+
   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
   <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>