When I click on my open menu icon, how can I make the "Nav Menu background" ease in when clicked on?

Thank you. It seems like I got the ease in animation to work. I tried to make the close button relative but it didn’t remain on the top. So I had to give it a -44 position top. Not sure if this is the correct way.

Also when I close the menu, the “X” blinks weirdly for some reason.

Also, for some reason when I send this link to view in read only mode - the navigation does not seem to work. Can you please let me know if it works for you.

https://preview.webflow.com/preview/tanias-fabulous-project?utm_medium=preview_link&utm_source=designer&utm_content=tanias-fabulous-project&preview=12aac864ca21613456ee198c8dca2939&mode=preview