How to make it open only the desired sub-menu?

Question

Sass

There is a menu in li of which one more menu is nested, in li of which one more is nested.
When I hover over the parent li, both the sub-menu and the sub-sub-menu open.
How can this be avoided? code pen

Answer 1

.nav-link-container:hover > ul{
    height: auto;
}

> learn css selectors.
js won't help here.

Answer 2

learn at least js/jquery