diff --git a/doc/source/index.rst b/doc/source/index.rst
index 7728a17..f779f40 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -8,6 +8,8 @@ Web Application Firewall (WAF) keeps web services stable and secure. It examines
    :class: container-sbv
 
    .. service_card::
+      :environment: internal
       :service_type: wafd
       :umn: This document helps you know about the Web Application Firewall (Dedicated) and guide you on how to use the service.
-      :api-ref: This document describes application programming interfaces (APIs) of the Web Application Firewall (Dedicated) and provides API parameter description and example values.
\ No newline at end of file
+      :api-ref: This document describes application programming interfaces (APIs) of the Web Application Firewall (Dedicated) and provides API parameter description and example values.
+      :best-practice: To use Web Application Firewall (Dedicated) more securely, reliably, flexibly, and efficiently, you are advised to follow the following best practices.