diff --git a/www/css/core.css b/www/css/core.css
index aea223fb..869bfdf3 100644
--- a/www/css/core.css
+++ b/www/css/core.css
@@ -658,7 +658,7 @@ article.ebook > header{
 	box-sizing: border-box;
 }
 
-article.ebook > header > div{
+article.ebook > header > hgroup{
 	color: #fff;
 	position: relative;
 	z-index: 1;
@@ -673,16 +673,17 @@ article.ebook > header > div{
 	margin: 2rem; /* for responsive */
 }
 
-article.ebook > header > div > p{
+article.ebook > header > hgroup > h2{
 	font-size: 1.4rem;
 	font-family: 'League Spartan', sans-serif;
 	line-height: 1;
 	margin-top: 1rem;
+	margin-left: 0;
 }
 
-article.ebook > header > div a,
-article.ebook > header > div a:link,
-article.ebook > header > div a:visited{
+article.ebook > header > hgroup a,
+article.ebook > header > hgroup a:link,
+article.ebook > header > hgroup a:visited{
 	color: inherit;
 	text-decoration: none;
 }
@@ -1521,7 +1522,7 @@ main.ebooks nav ol li.highlighted:nth-last-child(2)::after{
 		margin: 0;
 	}
 
-	article.ebook > header > div{
+	article.ebook > header > hgroup{
 		margin: 1rem;
 		padding: 1rem;
 		max-width: 85%;
@@ -1531,7 +1532,7 @@ main.ebooks nav ol li.highlighted:nth-last-child(2)::after{
 		font-size: 1.5rem;
 	}
 
-	article.ebook > header > div > p{
+	article.ebook > header > hgroup > h2{
 		font-size: 1.2rem;
 	}
 
diff --git a/www/ebooks/ebook.php b/www/ebooks/ebook.php
index a122e2ff..f9032899 100644
--- a/www/ebooks/ebook.php
+++ b/www/ebooks/ebook.php
@@ -72,12 +72,12 @@ catch(\Exception $ex){
 <main>
 	<article class="ebook">
 		<header>
-			<div>
+			<hgroup>
 				<h1><?= Formatter::ToPlainText($ebook->Title) ?></h1>
 				<? foreach($ebook->Authors as $author){ ?>
-				<p><a href="<?= Formatter::ToPlainText($ebook->AuthorsUrl) ?>"><?= Formatter::ToPlainText($author->Name) ?></a></p>
+				<h2><a href="<?= Formatter::ToPlainText($ebook->AuthorsUrl) ?>"><?= Formatter::ToPlainText($author->Name) ?></a></h2>
 				<? } ?>
-			</div>
+			</hgroup>
 			<picture>
 				<? if($ebook->HeroImage2xAvifUrl !== null){ ?><source srcset="<?= $ebook->HeroImage2xAvifUrl ?> 2x, <?= $ebook->HeroImageAvifUrl ?> 1x" type="image/avif"><? } ?>
 				<source srcset="<?= $ebook->HeroImage2xUrl ?> 2x, <?= $ebook->HeroImageUrl ?> 1x" type="image/jpg">