Popups for Commerce site

Popups for Commerce site

Is it possible to create a website popup within Commerce?  I'm thinking - currently - of a notice about Covid-19 arrangements, and would like a 'click to close' banner that would be shown to visitors. 

Ideally it would be superimposed over the normal site content, and we would be able to govern aspects like the length of time between vewings.

Thanks for any suggestions