diff --git a/www/index.html b/www/index.html
index d2f8397..ae61e61 100644
--- a/www/index.html
+++ b/www/index.html
@@ -1,76 +1,75 @@
 <!doctype html>
 <html lang="ja">
-  <head prefix="og: https://ogp.me/ns#">
-    
-    <link rel="canonical" href="https://hayaworld.net/">
-    <meta name="description" content="Hayaworld aka Hayato world">
-    
-    <!-- Required meta tags -->
-    <meta charset="utf-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <head prefix="og: https://ogp.me/ns#">
 
-    <!-- Bootstrap CSS -->
-    <link rel="stylesheet" href="bootstrap.min.css">
+        <link rel="canonical" href="https://hayaworld.net/">
+        <meta name="description" content="Hayaworld aka Hayato world">
 
-    <!-- OGP -->
-    <meta property="og:url" content="https://hayaworld.net/">
-    <meta property="og:type" content="website">
-    <meta property="og:title" content="Hayaworld.net">
-    <meta property="og:description" content="Hayaworld aka Hayato world.">
-    <meta property="og:site_name" content="Hayaworld.net">
-    <meta property="og:image" content="https://hayaworld.net/ogp.jpg">
-    
-    <meta name="twitter:card" content="summary_large_image">
-    <meta name="twitter:text:title" content="Hayaworld">
-    <meta name="twitter:description" content="Hayaworld aka Hayato world">
-    
-    <title>Hayaworld.net</title>
-  </head>
-  <body class="text-white bg-dark">
-    <nav class="navbar navbar-dark" style="background-color:#444444;">
-      <a href="https://hayaworld.net/" class="navbar-brand text-warning">Hayaworld.net</a> This is Hayaworld.
-    </nav>
-	
-    <div class="text-center" style="padding-top:8px;">
-      <h1 class="display-4">Hayaworld.net</h1>
-      <p class="lead">A.K.A HAYATO WORLD 2018-2023</p>
+        <!-- Required meta tags -->
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
-      <h2> Contents </h2>
-      <div class="container-fluid">
-	<div class="row justify-content-center">
-	  <div class="col-sm-4">
-	    <div class="card text-white bg-secondary mb-4 h-100">
-	      <div class="card-body">
-		<img src="145430.png" class="card-img-top" alt="JK1QQB">
-		<h3 class="card-title">JK1QQB</h3>
-		<p class="card-text">
-		  The amature radio station<br>
-		  (アマチュア無線局)
-		</p>
-		<a href="jk1qqb/index.html" class="btn btn-primary"> Go to JK1QQB Site</a>
-	      </div>
-	    </div>
-	  </div>
+        <!-- Bootstrap CSS -->
+        <link rel="stylesheet" href="bootstrap.min.css">
 
-    <div class="col-sm-4">
-	    <div class="card text-white bg-secondary mb-4 h-100">
-	      <div class="card-body">
-		<img src="gh.png" class="card-img-top" alt="GitHub">
-		<h3 class="card-title">GitHub</h3>
-		<p class="card-text">
-		  GitHub Account<br>
-		  　
-		</p>
-    <a href="https://github.com/cradle8810" class="btn btn-primary"> Go to GitHub Site</a>
+        <!-- OGP -->
+        <meta property="og:url" content="https://hayaworld.net/">
+        <meta property="og:type" content="website">
+        <meta property="og:title" content="Hayaworld.net">
+        <meta property="og:description" content="Hayaworld aka Hayato world.">
+        <meta property="og:site_name" content="Hayaworld.net">
+        <meta property="og:image" content="https://hayaworld.net/ogp.jpg">
+
+        <meta name="twitter:card" content="summary_large_image">
+        <meta name="twitter:text:title" content="Hayaworld">
+        <meta name="twitter:description" content="Hayaworld aka Hayato world">
+
+        <title>Hayaworld.net</title>
+    </head>
+    <body class="text-white bg-dark">
+        <nav class="navbar navbar-dark" style="background-color:#444444;">
+            <a href="https://hayaworld.net/" class="navbar-brand text-warning">Hayaworld.net</a> This is Hayaworld.
+        </nav>
+
+        <div class="text-center" style="padding-top:8px;">
+            <h1 class="display-4">Hayaworld.net</h1>
+            <p class="lead">A.K.A HAYATO WORLD 2018-2023</p>
+
+            <h2> Contents </h2>
+            <div class="container-fluid">
+    <div class="row justify-content-center">
+        <div class="col-sm-4">
+            <div class="card text-white bg-secondary mb-4 h-100">
+                <div class="card-body">
+        <img src="145430.png" class="card-img-top" alt="JK1QQB">
+        <h3 class="card-title">JK1QQB</h3>
+        <p class="card-text">
+            The amature radio station<br>
+            (アマチュア無線局)
+        </p>
+        <a href="jk1qqb/index.html" class="btn btn-primary"> Go to JK1QQB Site</a>
+                </div>
+            </div>
         </div>
-      </div>
+
+        <div class="col-sm-4">
+            <div class="card text-white bg-secondary mb-4 h-100">
+                <div class="card-body">
+        <img src="gh.png" class="card-img-top" alt="GitHub">
+        <h3 class="card-title">GitHub</h3>
+        <p class="card-text">
+            GitHub Account<br>
+        </p>
+        <a href="https://github.com/cradle8810" class="btn btn-primary"> Go to GitHub Site</a>
+                </div>
+            </div>
+        </div>
+
     </div>
+        <hr>
+        <p>
+            Hayaworld aka Hayato World since 2018
+        </p>
 
-  </div>
-    <hr>
-    <p>
-      Hayaworld aka Hayato World since 2018
-    </p>
-    
-  </body>
+    </body>
 </html>
