chore: add website preview templates (#1716)

website/src/components/notification.js

@@ -0,0 +1,10 @@
+import React from 'react';
+import cn from 'classnames';
+
+const Notification = ({ url, loud, children }) => (
+  <a href={url} className={cn('notification', { 'notification-loud': loud })}>
+    {children}
+  </a>
+);
+
+export default Notification;