Adding animation to sub menu item

[CreatorTim]

Hi, In the header on mobile, I have a sub-menu under the menu item PRODUCTS, and I want to add a smooth animation so that when I click the plus/minus icon, the sub-menu slides in and out smoothly.

Want it exactly like it works on this store: https://tomnoske.store/

Here’s my store: https://1049xn-ya.myshopify.com/

This is for mobile only!

Thanks a lot, I’d really appreciate the help.
Tim

[Shipo-studio]

This is because of the CSS properties: transition: opacity 1s ease, height 0.5s ease, visibility 0s;. Let me know if you need me to implement this.

[CreatorTim]

Hi, yes please. Could you provide me with the code for the animation?