Working on a website, I've designed a custom menu that is hidden with 0 opacity and z-index -1. When a button is clicked, the menu will appear on the screen.
You can visit to see the site in action.
The issue I'm facing is that every time I click the button to show the menu, it scrolls back to the top of the page.
I'm looking for a solution where the menu appears without causing the page to scroll back to the top when clicked.
I have tried using fixed and absolute positioning without success.
Thank you for your help.