Hello devlopers in this project you learn Bootstap in the class component ,so you first insert the Bootstap CDN link in head tag --> and body tag you add cdn its a script ---><script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script>