diff --git a/package.json b/package.json
index b3514da..c85c6c8 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
     "postcss": "^8.4.33",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
+    "react-fast-marquee": "^1.6.4",
     "react-katex": "^3.0.1",
     "react-markdown": "^9.0.1",
     "react-scroll-percentage": "^4.3.2",
diff --git a/src/components/Mutuals.tsx b/src/components/Mutuals.tsx
index f0c5685..98ce458 100644
--- a/src/components/Mutuals.tsx
+++ b/src/components/Mutuals.tsx
@@ -1,16 +1,22 @@
+import Marquee from "react-fast-marquee";
+
 export default function Mutuals() {
-    const noImageBanner = `border border-4 inline-block border-lime-300 bg-slate-200 pt-1.5 w-fit px-3 text-black h-12 font-extrabold`
-    const globalBanner = `h-12 inline`
+    const noImageBanner = `border border-4 border-fuchsia-300 bg-slate-200 pt-1.5 px-3 text-black h-12 font-bold block min-w-56 text-center text-2xl font-serif`
+    const globalBanner = `h-12 inline-block`
 
     return (
-        <div className="flex whitespace-nowrap overflow-x-hidden">
-            <div className="relative">
-                <div className="w-fit animate-marquee">
+        <Marquee
+            pauseOnHover={true}
+            speed={100}
+            className="-z-10"
+        >
             <a href="https://arkw.net">
                 <img
                     alt="arkw.net"
                     src="./mutual-links/arkwnet.webp"
                     className={`${globalBanner} bg-zinc-100`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://exout.net/~kirby3ds/">
@@ -18,6 +24,8 @@ export default function Mutuals() {
                     alt="kirby3ds"
                     src="./mutual-links/kirby3ds.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://kris.fail">
@@ -25,6 +33,8 @@ export default function Mutuals() {
                     alt="kris.fail"
                     src="./mutual-links/kris_fail.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://kusaremkn.com">
@@ -32,6 +42,8 @@ export default function Mutuals() {
                     alt="KusaReMKN"
                     src="./mutual-links/kusaremkn.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://nona-takahara.github.io/">
@@ -39,6 +51,8 @@ export default function Mutuals() {
                     alt="nona-takahara"
                     src="./mutual-links/nona-takahara.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://www.pepepper.net">
@@ -46,6 +60,8 @@ export default function Mutuals() {
                     alt="pepepper"
                     src="./mutual-links/pepepper.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://qqey.net">
@@ -53,13 +69,17 @@ export default function Mutuals() {
                     alt="qqey.net"
                     src="./mutual-links/qqeynet.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://sasakulab.com">
-                <img 
+                <img
                     alt="sasakulab.com"
                     src="./mutual-links/sasakulab.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://nullc.at/">
@@ -67,6 +87,8 @@ export default function Mutuals() {
                     alt="nullcat"
                     src="./mutual-links/nullcat.webp"
                     className={`${globalBanner}`}
+                    width={234}
+                    height={60}
                 />
             </a>
             <a href="https://zopfco.de/">
@@ -80,7 +102,7 @@ export default function Mutuals() {
                 </span>
             </a>
             <a href="https://fuku.day/">
-                <span className={`${noImageBanner}`}>   
+                <span className={`${noImageBanner}`}>
                     Aumy
                 </span>
             </a>
@@ -95,20 +117,19 @@ export default function Mutuals() {
                 </span>
             </a>
             <a href="https://hieri.vercel.app">
-            <img
-                alt="hieri"
-                src="./mutual-links/hieri.webp"
-                className={`${globalBanner}`}
-            />
+                <img
+                    alt="hieri"
+                    src="./mutual-links/hieri.webp"
+                    className={`${globalBanner}`}
+                    width={234}
+                    height={60}
+                />
             </a>
             <a href="https://rz7.dev">
                 <span className={`${noImageBanner}`}>
                     rz7.dev
                 </span>
             </a>
-        </div>
-        </div>
-        </div>
+        </Marquee>
     )
 }
-  
\ No newline at end of file
diff --git a/src/components/Theme.tsx b/src/components/Theme.tsx
index fcfeead..0e00f73 100644
--- a/src/components/Theme.tsx
+++ b/src/components/Theme.tsx
@@ -32,19 +32,19 @@ type Props = {
 };
 
 export const ThemeSwitcher = () => {
-    const {theme, toggleTheme} = useTheme();
+    const { theme, toggleTheme } = useTheme();
 
     return (
         <button
             type="button"
-            className="btn btn-secondary"
+            className="btn btn-secondary drop-shadow-md"
             onClick={toggleTheme}
             aria-label="テーマの切り替え"
-          >
+        >
             {theme === "light" ? (
-              <FontAwesomeIcon icon={faMoon} />
+                <FontAwesomeIcon icon={faMoon} />
             ) : (
-              <FontAwesomeIcon icon={faSun} />
+                <FontAwesomeIcon icon={faSun} />
             )}
         </button>
     )
diff --git a/tailwind.config.js b/tailwind.config.js
index 777bd34..2a11ef4 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -6,17 +6,7 @@ export default {
     "./src/**/*.{js,ts,jsx,tsx}",
   ],
   theme: {
-    extend: {
-      animation: {
-        marquee: 'marquee 30s linear infinite'
-      },
-      keyframes: {
-        marquee: {
-          '0%': { transform: 'translateX(100%)' },
-          '100%': { transform: 'translateX(-160%)' }
-        }
-      }
-    },
+    extend: {},
   },
   plugins: [
     require('@tailwindcss/typography'),