diff --git a/doc/development_guide/development_guide.md b/doc/development_guide/development_guide.md
index c1a31d314b4388e7432b24d481533335edddc43b..e1d72aecebfa58694b1b2dea5be954f10d2dfb77 100644
--- a/doc/development_guide/development_guide.md
+++ b/doc/development_guide/development_guide.md
@@ -1,3 +1,6 @@
 - [2.1. Configure Environment](./2.-Development-Guide/2.1.-Configure-Environment)
 - [2.2. Configure VScode](./2.-Development-Guide/2.2.-Configure-VScode)
 - [2.3. Develop A Component (WIP)](./2.-Development-Guide/2.3.-Develop-A-Component)
+
+
+### can be deleted as it has no relevant information.
\ No newline at end of file
diff --git a/mkdocs.yml b/mkdocs.yml
index 4d0c3b67993e8c5573f43d3ac86691ba30dee058..6e5a5c6504817a2b4024c87842e8a745b10330a2 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -40,6 +40,9 @@ theme:
   - navigation.path
   - search
   - search.highlight
+  #adding features
+  - navigation.tabs
+  - toc.integrate
 
   palette:
     primary: '0D47A1' ##TFS logo color