I want a banner or a div that stays in the middle of my page is that in this banner has a button to close it is that while it does not close it is not possible to have access to anything on the page ..
summary: a div that when it enters my page it appears and blocks all the content of the page is only released when you click on the button it closes, in it I will put an advertisement:)
I do not understand anything about programming so I do not have an example I hope to understand obg ...