diff --git a/slide/pages/calling_platform-specific_APIs.md b/slide/pages/calling_platform-specific_APIs.md
index ea89132..b24230b 100644
--- a/slide/pages/calling_platform-specific_APIs.md
+++ b/slide/pages/calling_platform-specific_APIs.md
@@ -35,7 +35,7 @@ layout: two-cols
 
 ## Journey Overview
 
-```mermaid {scale: 0.6}
+```mermaid {scale: 0.5}
 journey
     section In the beginning
         with「Platform Channels」: 3
diff --git a/slide/pages/introduction.md b/slide/pages/introduction.md
index 299fe41..5146670 100644
--- a/slide/pages/introduction.md
+++ b/slide/pages/introduction.md
@@ -30,6 +30,7 @@ https://docs.flutter.dev/development/platform-integration/macos/c-interop
 ---
 
 <PageTitleHeader section="introduction" title="Agenda"/>
+<br>
 
 ● **summary**  
 ● **prerequisite information**  
diff --git a/slide/slides.md b/slide/slides.md
index 2a710a9..7c89066 100644
--- a/slide/slides.md
+++ b/slide/slides.md
@@ -6,7 +6,7 @@ colorSchema: light
 background: https://source.unsplash.com/collection/94734566/1920x1080
 class: text-center
 highlighter: shiki
-lineNumbers: true
+# lineNumbers: true
 drawings:
   presenterOnly: true
 css: unocss