Refine monthly close cleanup

frontend/src/App.tsx

@@ -688,7 +688,7 @@ export function App() {
           <QuickTimerStarter inputId="quick-ticket-number-mobile" onStartTimer={startQuickTimer} />
         </div>
         <main className="min-h-0 min-w-0 flex-1 overflow-x-hidden p-3 sm:p-4 md:p-5">
-          <div className="mx-auto w-full max-w-[1180px]">
+          <div className="mx-auto w-full max-w-screen-2xl">
             {route.page === "timer" ? (
               <TimerPage
                 timers={timers}