chore: update TailwindCSS and opt max-w

components/footer.tsx

@@ -1,8 +1,16 @@
+import Link from "next/link";
+
 export default function Footer() {
   return (
-    <footer className="w-full bg-white dark:bg-gray-950 shadow p-4 text-left text-gray-500 dark:text-gray-400 flex flex-row gap-2">
+    <footer className="w-full bg-white dark:bg-gray-950 shadow-sm p-4 text-left text-gray-500 dark:text-gray-400 flex flex-row gap-2">
       <div className="container mx-auto">
-        <div>© {new Date().getFullYear()} 智能计算实验室 · Designed by LufsX.</div>
+        <div>
+          © {new Date().getFullYear()} 智能计算实验室 · Designed by{" "}
+          <Link href="https://isteed.cc" target="_blank" rel="noopener noreferrer">
+            LufsX
+          </Link>
+          .
+        </div>
       </div>
     </footer>
   );

components/header.tsx

@@ -2,7 +2,7 @@ import Link from "next/link";
 
 export default function Header() {
   return (
-    <header className="home-header px-4 w-full bg-white dark:bg-gray-950 shadow flex sm:px-8">
+    <header className="home-header px-4 w-full bg-white dark:bg-gray-950 shadow-sm flex sm:px-8">
       <nav className="container mx-auto flex justify-between items-center">
         <div className="flex items-center">
           <Link href="/">