The Bootstrap collapse plugin allows you to toggle content on your pages with a few classes thanks to some helpful JavaScript.

You can use a link with the href attribute, or a button with the data-target attribute.

In all cases, the data-toggle="collapse" is required.

Refer following links for usage:

Type	URL
Bootstrap Page	https://getbootstrap.com/docs/4.1/components/collapse/
Template Page	https://pixinvent.com/demo/convex-bootstrap-admin-dashboard-template/demo-1/components-collapse.html