How to make vertical scrolling menu in wordpress

Question

Layout

Hello!
I really need a kick.
I've had a headache for a week now.
I can't figure out how to make a vertical scrolling menu.
Please share your experience.
Thank you in advance!
Here is the perfect example that you want to make on your website.

Answer 1

In fact, there is nothing complicated here.
You will decide how to style the menu for the VI, since sometimes you may need to create a walker (for better customization)
And to create a vertical menu, as noted by Dima Polos, you can use a specific height and overflow-y: auto;
Or you can use ready-made plugins - www.bestplugins.com/cms/wordpress-vertical-menu.html
Or if you have a bootstrap theme, you can use ready-made snippets.
https://bootsnipp.com/search?q=vertical+menu+with+...
https://freebiesupply.com/blog/css-menus/
(many snippets... need to search)

Answer 2

Give the block a height, hard, and overflow: auto.