chore: update TailwindCSS and opt max-w

app/layout.tsx

@@ -12,7 +12,7 @@ export default function RootLayout({
 }>) {
   return (
     <html lang="zh-cn" className="dark">
-      <body className="antialiased min-h-screen flex flex-col bg-gray-100 dark:bg-gray-900 transition-colors ">{children}</body>
+      <body className="antialiased min-h-screen flex flex-col">{children}</body>
     </html>
   );
 }