diff --git a/src/blog/post-1.md b/src/blog/post-1.md
index 9caafec..99a974c 100644
--- a/src/blog/post-1.md
+++ b/src/blog/post-1.md
@@ -5,6 +5,7 @@ author: 'Nakahara Daisuke'
 tags: ["introduction"]
 ---
 
+# Hello!
 Hello, my name is Daisuke.
 
 This is my first blog post. Nice to meet you.
diff --git a/src/blog/post-2.md b/src/blog/post-2.md
new file mode 100644
index 0000000..54b30b0
--- /dev/null
+++ b/src/blog/post-2.md
@@ -0,0 +1,14 @@
+---
+title: 'I Have Finally Published My Blog Website'
+pubDate: 2025-05-15
+author: 'Nakahara Daisuke'
+tags: []
+---
+
+I have finally published my blog website. 
+
+Its infrastructure relies on AWS, and I use Microsoft Copilot to manage the hosting. 
+
+This tool is particularly useful because it allows me to inquire about the contents of tags opened in Microsoft Edge.
+
+Thank you.
diff --git a/src/layouts/BaseLayout.astro b/src/layouts/BaseLayout.astro
index ef3c97a..3e068d8 100644
--- a/src/layouts/BaseLayout.astro
+++ b/src/layouts/BaseLayout.astro
@@ -15,7 +15,9 @@ const { pageTitle } = Astro.props;
     </head>
     <body>
         <Header />
-        <h1>{pageTitle}</h1>
+        <h1 class="page-title">
+            {pageTitle}
+        </h1>
         <slot />
         <Footer>
         <script>
@@ -23,3 +25,9 @@ const { pageTitle } = Astro.props;
         </script>
     </body>
 </html>
+
+<style>
+  .page-title {
+      font-size: 2.8rem;
+  }
+</style>
\ No newline at end of file
diff --git a/src/layouts/MarkdownPostLayout.astro b/src/layouts/MarkdownPostLayout.astro
index 6bc14ce..0e7a037 100644
--- a/src/layouts/MarkdownPostLayout.astro
+++ b/src/layouts/MarkdownPostLayout.astro
@@ -12,8 +12,7 @@ const optionsForDate = {
 ---
 
 <BaseLayout pageTitle={frontmatter.title}>
-  <p>Created on: {frontmatter.pubDate.toLocaleDateString("ja-JP", optionsForDate)}</p>
-  <p>Written by: {frontmatter.author}</p>
+  <p>Created on: {frontmatter.pubDate.toLocaleDateString("en-US", optionsForDate)}</p>
   <p><em>{frontmatter.description}</em></p>
   <div class="tags">
     {
@@ -24,7 +23,9 @@ const optionsForDate = {
       ))
     }
   </div>
-  <slot />
+  <article class="markdown-content">
+    <slot />
+  </article>
 </BaseLayout>
 
 <style>
@@ -45,4 +46,20 @@ const optionsForDate = {
     font-size: 1.15em;
     background-color: #f8fcfd;
   }
+
+  .markdown-content {
+      font-family: sans-serif;
+      font-size: 1.2rem;
+  }
+
+  .markdown-content h1 {
+      font-size: 1.9rem;
+  }
+  .markdown-content h2 {
+      font-size: 1.75rem;
+  }
+  .markdown-content h3 {
+      font-size: 1.5rem;
+  }
+
 </style>
diff --git a/src/pages/blog.astro b/src/pages/blog.astro
index 4a4fe24..a48cbe4 100644
--- a/src/pages/blog.astro
+++ b/src/pages/blog.astro
@@ -20,10 +20,10 @@ const pageTitle = "Latest Posts";
 				<BlogPost
 					url={`/posts/${post.id}/`}
 					title={post.data.title}
-					datetime={post.data.pubDate.toLocaleDateString("ja-JP", {
+					datetime={post.data.pubDate.toLocaleDateString("en-US", {
 						year: "numeric",
-						month: "2-digit",
-						day: "2-digit",
+						month: "long",
+						day: "numeric",
 					})}
 				/>
 			))
diff --git a/src/pages/index.astro b/src/pages/index.astro
index bcdd227..06ba9b9 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -45,10 +45,10 @@ const allPosts = await getCollection("blog");
 				<BlogPost
 					url={`/posts/${post.id}/`}
 					title={post.data.title}
-					datetime={post.data.pubDate.toLocaleDateString("ja-JP", {
+					datetime={post.data.pubDate.toLocaleDateString("en-US", {
 						year: "numeric",
-						month: "2-digit",
-						day: "2-digit",
+						month: "long",
+						day: "numeric",
 					})}
 				/>
 			))
diff --git a/src/pages/posts/[slug].astro b/src/pages/posts/[slug].astro
index 87b3ea2..d97b3a2 100644
--- a/src/pages/posts/[slug].astro
+++ b/src/pages/posts/[slug].astro
@@ -16,4 +16,4 @@ const { Content } = await render(post);
 
 <MarkdownPostLayout frontmatter={post.data}>
     <Content />
-</MarkdownPostLayout>
+</MarkdownPostLayout>
\ No newline at end of file
