There is a page https://dankterchufmyi.tk/lander/biolica-1---cr/. I want to put a comebacker script so that when you click on the back button or close the window, a window pops up with text like "Wait! We have a unique offer for you - 50% discount" And so that this window has an order form in the style of the form, like on the page itself.
An example of a script is in this article: https://yellowweb.top/скрипт-comebacker/.
Please tell me how to implement it. How can I implement it so that when you click on the back button or close the window, a window pops up with text like "Wait! There is a unique offer for you - 50% discount" this window has an order form in the style of the form, like on the page itself.