diff --git a/_includes/top/sections/hero.html b/_includes/top/sections/hero.html
index 3538d683..64fbe93e 100644
--- a/_includes/top/sections/hero.html
+++ b/_includes/top/sections/hero.html
@@ -2,7 +2,7 @@
   <img src="/img/2025/top/hero-image.png" alt="好奇心に火をつけよう！！ Inspire Next" />
 </div>
 
-<div class="flex mx-auto max-w-[1020px] justify-center lg:justify-start">
+<div class="flex mx-auto max-w-[1080px] justify-center lg:justify-start">
   <p class="lg:-mt-6 xl:-mt-10 leading-8 px-6 text-lg font-bold">
     DojoCon Japanとは日本の CoderDojo コミュニティメンバーが全国から集まる、<br />
     年に1度のカンファレンスイベント(CoderDojo Conference) です。<br />
diff --git a/index.md b/index.md
index 11e189d5..2fd649db 100644
--- a/index.md
+++ b/index.md
@@ -1,7 +1,7 @@
 ---
 layout: top
 ---
-<div class="bg-white bg-[url(/img/2025/top/header-background.png)] bg-contain bg-no-repeat bg-top bg-center rounded-2xl min-h-full flex-grow flex flex-col">
+<div class="bg-[url(/img/2025/top/header-background.png)] bg-contain bg-no-repeat bg-top bg-center">
   {% include header.html %}
 
   {% include top/sections/hero.html %}