I would like the code for side drawer menu on demo

I would like the code for side drawer menu on demo.
I want to use that to draw attention to some content on my site.

Can I please have the code for that ? Is it a plugin ?
In anycase, I want that, please help.

I'm sorry but it's not a part of a theme (it's not a plugin, we made this only for our demo purposes and unfortunately I can't give you this code)