diff --git a/Gemfile b/Gemfile
index 387154f..f5d3d3a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,4 +4,4 @@ gem "jekyll", "~> 4.3" # installed by `gem jekyll`
 # gem "webrick"        # required when using Ruby >= 3 and Jekyll <= 4.2.2
 
 gem "just-the-docs", "0.5.0" # pinned to the current release
-# gem "just-the-docs"        # always download the latest release
+# gem "just-the-docs"        # always download the latest release
\ No newline at end of file
diff --git a/_config.yml b/_config.yml
index 8800f2f..af3e9d1 100644
--- a/_config.yml
+++ b/_config.yml
@@ -19,14 +19,13 @@ nav_external_links:
     url: https://apps.apple.com/us/app/%E4%BB%93%E8%BE%93%E5%85%A5%E6%B3%95/id6446617683
     hide_icon: false # set to true to hide the external link icon - defaults to false
 
-# markdown: kramdown
+markdown: kramdown
 
-kramdown:
-  syntax_highlighter_opts:
-    block:
-      line_numbers: false
+# kramdown:
+#   syntax_highlighter_opts:
+#     block:
+#       line_numbers: false
 
-callouts_level: quiet # or loud
 callouts:
   highlight:
     color: yellow