Scroll to section ID not working

My scroll to section ID functionality doesn’t work.

I imported a theme to create the website, and it came with a custom scroll bar.
So for it to be shown I have 2 rules added to site container:

  1. overflow-x: hidden;
  2. overflow-y: visible;

If I deactivate those 2 rules and add the overflow: visible; rule to the site container, the scroll to section ID works. But I really need to keep the custom scroll bar.
Do you have any ideas on how could I achieve this? To keep the custom scroll bar and also the scroll to section ID to work.

Thank you!

Here is my site Read-Only:

I found a way.
I deleted the scroll bare made for the container and added CSS for the default sidebar. So I could delete the overflow rules.