CSS customized scroll bar in div

Question

How can I customize a scroll bar via CSS (Cascading Style Sheets) for one div and not the whole page?

Answer 1

For people still looking for a good solution just I find out this plugin simplebar

Custom scrollbars vanilla javascript library with native scroll, done simple, lightweight, easy to use and cross-browser.

In my case, I was looking for reactJS solutions, the author also provides wrappers for react, angular, vue and next examples