Click to open document in full screen?

Question

css

On this page - www.paratype.ru/fontorium/typoscope/, in the center, right after the demo text, there is a link " read the entire text ". When you click on this link, the document opens in the entire window, the content of the document is centered in the middle of the window, and there is no (!) additional to the main browser scroll bar; url does not change when clicked, which is exactly what is needed.
How is it done: pure css, js? How to implement this competently?

Answer 1

And you didn't get into the code at all? great from
here:

$("#full_text_link").livequery('click', function (event) {
            $("#menu").hide();
            $("#result").hide();
            $("#about").hide();
            $("h1").hide();
            $("#font_choice").hide();
          });

The blocks are hidden and only the desired block remains visible.
jQuery.
I don’t know how you can hide everything on pure css