Hi @Eightmuro8
ok. I see.
I would make it differently.
I would make an extra page and put everything in what you want to have on the overlay page.
Then you define this page as a footer of another page.
With CSS you can give that footer a
position: fixed;
top: 0px, left: 0px,
width: 100vw,
height: 100vh;
I hope that helps!
Best!
Marius