How to float the slide of the webpage?

Question

https://code.sololearn.com/Wh2ufcM3SBXI/?ref=app

Answer 1

but I want to float it by button I already mention the coding of button,
when anyone click on the button the image can change

Answer 2

If You Want A Picture Or Text To float You Can Use The Marquee Tag

Answer 3

what do you mean exactly?