How to make sidebar sticky like this website

Hi. Can somebody point me in a direction to make this sticky sidebar possible: https://flypaper.soundfly.com/discovery/nu-jazz-6-artists-fuse-jazz-electronic-music/

I have tried multiple plugins from wordpress as well as a Jquery plugin, none of which worked. The wordpress plugins I could find only stick to the top of the sidebar or widget and don’t allow the bottom of the sidebar to be the sticky object. The Jquery plugin I used stuck to the bottom, but it was so glitchy on the browsers that I couldn’t use it.

I have gone through countless forums and I haven’t found many people looking for this specific effect, hence there was no information. Is this something that you need Javascript for? Or can it be done in CSS. Or is there a plugin that allows this option.

It is such a common sidebar, i see it on 50% of websites, so I am surprised at how difficult it is to find information on how to make it happen.

Thanks so much for any advice!

Alex