Does the submenu disappear very quickly on hover?

Question

css

How do they make a submenu so that when you hover over different items, it does not immediately disappear if you move the cursor to the side, but with a delay.

Answer 1

Or hide through animation with a delay or scripts.
The coolest do something like this: https://habr.com/ru/post/252975/

Answer 2

transition-delay to help you