Responsive viewport meta tag
meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"
Latest compiled and minified CSS
link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"
jQuery library
script src="https://cdn.jsdelivr.net/npm/jquery@3.5.1/dist/jquery.slim.min.js" /script
Popper JS
script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" /script
Latest compiled JavaScript
script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js" /script