diff --git a/src/layouts/Base/index.astro b/src/layouts/Base/index.astro
index 7e6d01c..889cb5a 100644
--- a/src/layouts/Base/index.astro
+++ b/src/layouts/Base/index.astro
@@ -19,12 +19,12 @@ const { pageTitle } = Astro.props
 ---
 
 <html lang="en">
+  <script is:inline defer>
+    const theme = localStorage.getItem('@karamablog/theme') || 'light'
+    document.documentElement.dataset.theme = theme
+  </script>
   <Head {...Astro.props} />
   <body>
-    <script is:inline>
-      const theme = localStorage.getItem('@karamablog/theme') || 'light'
-      document.documentElement.dataset.theme = theme
-    </script>
   
     <Header />
 
