Make right menu move when scrolling the site

here is the link:
Printscreen

Hi there,

you can make the right-sidebar stick by adding this CSS:

@media (min-width: 769px) {
    #right-sidebar {
        position: -webkit-sticky;
        position: sticky;
        top: 60px; /* Adjust this change sticking position */
    }
}

Hi David,
Many thanks and take care :)

You're welcome

Hi again,
I just noticed that the Right Menu Widget is following in Firefox and Microsoft Edge but not in regular Internet Explorer (version 11).

Can you please help me figure this out?
I will open the site for a short time,
https://informatorpolonijny.se/

Many thanks,
Patrik

position: sticky; is not supported by Internet Explorer 11.
The only way to do it is with JS and you would be better off using a plugin like this:

https://wordpress.org/plugins/q2w3-fixed-widget/