diff --git a/src/components/Footer.astro b/src/components/Footer.astro
index 9c72f54..3e2edc3 100644
--- a/src/components/Footer.astro
+++ b/src/components/Footer.astro
@@ -16,5 +16,5 @@
 </style>
 
 <footer>
-    <p class="legal-information">&copy; 2025 Nakahara Daisuke</p>
+    <p class="legal-information">&copy; 2026 Nakahara Daisuke — Built with <a href="https://astro.build" target="_blank" rel="noopener">Astro</a></p>
 </footer>
diff --git a/src/components/Navigation.astro b/src/components/Navigation.astro
index 4257856..67284b2 100644
--- a/src/components/Navigation.astro
+++ b/src/components/Navigation.astro
@@ -7,7 +7,7 @@
     <a href="/about/">About</a>
     <a href="/blog/">Articles</a>
     <a href="/tags/">Tags</a>
-    <a href="https://git.n-daisuke897.com/" target="_blank">
+    <a href="https://git.n-daisuke897.com/nakada0907/" target="_blank">
         <img src="/icon/simple-icons--forgejo.svg" alt="Forgejo Icon">
     </a>
 </div>
diff --git a/src/layouts/MarkdownPostLayout.astro b/src/layouts/MarkdownPostLayout.astro
index af007b0..b236a24 100644
--- a/src/layouts/MarkdownPostLayout.astro
+++ b/src/layouts/MarkdownPostLayout.astro
@@ -49,18 +49,27 @@ const optionsForDate = {
 
   .markdown-content {
     font-family: sans-serif;
-    font-size: 1.2rem;
-    line-height: 2.5;
+    font-size: 1.1rem;
+    line-height: 1.8;
   }
 
   .markdown-content h1 {
-    font-size: 1.9rem;
+    font-size: 1.6rem;
+    margin-top: 2rem;
+    margin-bottom: 1rem;
+    line-height: 1.3;
   }
   .markdown-content h2 {
-    font-size: 1.75rem;
+    font-size: 1.4rem;
+    margin-top: 1.8rem;
+    margin-bottom: 0.8rem;
+    line-height: 1.3;
   }
   .markdown-content h3 {
-    font-size: 1.5rem;
+    font-size: 1.2rem;
+    margin-top: 1.5rem;
+    margin-bottom: 0.6rem;
+    line-height: 1.3;
   }
 
 </style>
diff --git a/src/pages/index.astro b/src/pages/index.astro
index 06ba9b9..aa7888a 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -4,6 +4,7 @@ import BlogPost from "../components/BlogPost.astro";
 import { getCollection } from "astro:content";
 const pageTitle = "Naputo";
 const allPosts = await getCollection("blog");
+const sortedPosts = allPosts.sort((a, b) => b.data.pubDate.valueOf() - a.data.pubDate.valueOf());
 ---
 
 <style>
@@ -41,7 +42,7 @@ const allPosts = await getCollection("blog");
 	<h3 class="header-new-posts">New Posts</h3>
 	<div class="new-articles">
 		{
-			allPosts.slice(0, 6).map((post: any) => (
+			sortedPosts.slice(0, 5).map((post: any) => (
 				<BlogPost
 					url={`/posts/${post.id}/`}
 					title={post.data.title}