Menu staying at scrolling?

i use the menu on the top of the site. Is it possible, that the Menu/header is staying while scrolling down the site? Or is this a premium theme feature?
Here me site:

Hi @shiatsupeter,

I hope you are well today and thank you for your question.

This is the default feature of the theme and you can see on your shared site and also on our demo site that the header menu is floating at the top when you scroll the site.

If you don’t want menu floating then you can try achieving this by adding the following CSS code in the Custom CSS option of your theme on the below path.

Admin Area -> Appearance -> Customize -> Shapely Options -> Other

nav#site-navigation {
    position: relative;

Best Regards,