calendar going from one month to another

[chechu]

Hey all,
I have a nicely designed calendar, purely in html, like this:https://parisaspersiankitchen.com/calendar.php
I would like to have all months together, going from one to another by just clicking on an arrow, as like in the image below.

I guess some javascript is involved, so please let me know how to get this working.
Thanks.