pages/_app.js

import '../styles/globals.css';
import CustomNavbar from '../components/CustomNavbar';
import CustomSidebar from '../components/CustomSidebar';

function MyApp({ Component, pageProps }) {
  return (
    <>
      <CustomNavbar />
      <div className="flex">
        <CustomSidebar />
        <main className="flex-1">
          <Component {...pageProps} />
        </main>
      </div>
    </>
  );
}

export default MyApp;