Bootstrap 4 simple back to top with smooth scroll

bootstrap back to top smooth scroll : snippets by BBBootstrap.com.

back to top smooth scroll

RESOURCES

Bootstrap CSS : https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css
Bootstrap JS  : https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js
Jquery        : https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js