How do change <li> elements that are NOT active with pure CSS?

Question

I understand how to change the description of an active <li> element

li:active {
...declarations...
}

But how can I change all the other elements that are NOT active?

For example, all my elements are in bold, but when I select one of them, all the others are changed back to normal.

Thanks!

Answer 1

I'd imagine li:not(:active) should at least theoretically work.