react-router-dom 404 만들기

<Routes>
        <Route path="/" element={<Navigate to="/main" />} />
        <Route path="/main" element={<MainPage />} />
        <Route path="/login" element={<LoginPage />} />
        <Route path="/signup" element={<SignUpPage />} />
        <Route path="/contractprint" element={<ContractPrintPage />} />
        <Route path="*" element={<NotFoundPage />} /> ==> 404
</Routes>

제일 상단에 '/'
제일 하단에 * -> 404 Page 만들 수 있다