diff --git a/src/components/Apply.astro b/src/components/Apply.astro
index 379bef1..a1eafd7 100644
--- a/src/components/Apply.astro
+++ b/src/components/Apply.astro
@@ -1,9 +1,10 @@
 ---
 import { Image } from "astro:assets";
 import ApplyImage from "@/assets/apply-button.png";
+import { CONNPASS_URL } from "@/data/constants";
 ---
 
-<a href="#apply" class="apply">
+<a href={CONNPASS_URL} class="apply">
   <Image src={ApplyImage} width={200} height={200} alt="応募する" />
 </a>
 <style>
diff --git a/src/components/Footer.astro b/src/components/Footer.astro
index 5b749b5..de55388 100644
--- a/src/components/Footer.astro
+++ b/src/components/Footer.astro
@@ -6,6 +6,7 @@ import EventNameImage from "@/assets/event-name-en.svg";
 import FooterPersonImage from "@/assets/footer-person.png";
 import TrafficImage from "@/assets/footer-traffic.png";
 import SnsLinks from "./SnsLinks.astro";
+import { CONNPASS_URL } from "@/data/constants";
 
 const BOTTOM_LINKS = [
   {
@@ -54,9 +55,7 @@ const BOTTOM_LINKS = [
           />
         </div>
         <div class="topButtons">
-          <Button href="https://fec-tokyo.connpass.com/event/352581/">
-            Connpassで参加申込する
-          </Button>
+          <Button href={CONNPASS_URL}> Connpassで参加申込する </Button>
           <Button
             href="https://x.com/intent/tweet?text=Frontend%20Conference%20Tokyo%202025に参加申し込みをしました%20%EF%BC%81%0A%23fec_tokyo%0Ahttps%3A%2F%2Ffec-tokyo.github.io%2F"
             isGradated={false}
diff --git a/src/components/Header.astro b/src/components/Header.astro
index f598c32..75d48db 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -1,6 +1,14 @@
 ---
 import { Image } from "astro:assets";
 import LogoImage from "@/assets/header-logo.svg";
+
+const currentPath = Astro.url.pathname;
+const getNavHref = (section: string) => {
+  if (currentPath === "/" || currentPath === "/contents") {
+    return `#${section}`;
+  }
+  return `/#${section}`;
+};
 ---
 
 <header class="container">
@@ -14,9 +22,9 @@ import LogoImage from "@/assets/header-logo.svg";
     />
   </a>
   <nav class="nav" aria-label="メインナビゲーション">
-    <a href="#timetable" class="navLink">Timetable</a>
-    <a href="#sponsors" class="navLink">Sponsors</a>
-    <a href="#faq" class="navLink">Faq</a>
+    <a href={getNavHref("timetable")} class="navLink">Timetable</a>
+    <a href={getNavHref("sponsors")} class="navLink">Sponsors</a>
+    <a href={getNavHref("faq")} class="navLink">Faq</a>
   </nav>
 </header>
 
diff --git a/src/components/Introduction.astro b/src/components/Introduction.astro
index 3cb647e..ee6a555 100644
--- a/src/components/Introduction.astro
+++ b/src/components/Introduction.astro
@@ -1,5 +1,6 @@
 ---
 import Button from "@/components/Button.astro";
+import { CONNPASS_URL } from "@/data/constants";
 ---
 
 <section id="introduction" class="container">
@@ -42,7 +43,7 @@ import Button from "@/components/Button.astro";
         </p>
       </div>
       <div class="apply">
-        <Button href="/">
+        <Button href={CONNPASS_URL}>
           いますぐ参加申込する
           <span class="arrow"></span>
         </Button>
diff --git a/src/components/Timetable.astro b/src/components/Timetable.astro
index a77d814..295e7ca 100644
--- a/src/components/Timetable.astro
+++ b/src/components/Timetable.astro
@@ -217,7 +217,7 @@ import ExternalLinkIcon from "@/assets/external-link.svg";
 
   .container {
     position: relative;
-    overflow: hidden;
+    overflow: clip;
   }
 
   .container::before {
diff --git a/src/data/constants.ts b/src/data/constants.ts
new file mode 100644
index 0000000..ce6ea9e
--- /dev/null
+++ b/src/data/constants.ts
@@ -0,0 +1 @@
+export const CONNPASS_URL = "https://fec-tokyo.connpass.com/event/352581/";