Links para a documentação do Bootstrap: Navbar: https://getbootstrap.com/docs/4.5/components/navbar/ Formulários: https://getbootstrap.com/docs/4.5/components/forms/ Botões: https://getbootstrap.com/docs/4.5/components/buttons/ Footer (Utilitários de texto): https://getbootstrap.com/docs/4.5/utilities/text/