How to download and make lichess local host.

Maybe a coder or a mod?

Uh I don't really understand what you're trying to say. Is it about computer programming? #1

Well why are you commenting?

no he is asking how do they make mods

Checkout github maybe? A simple search lead me to this: https://github.com/ornicar/lila

Found it. Here it is: https://lichess.org/source

I am asking how to lol

Well this is how to download part. As for making it running on your local host. I don't exactly know but a few searches on stack overflow should get it done for you. Just search "how to run code on localhost" or similar stuff and you can figure it out yourself.

From what I understand, you want to setup a local test server. Is that correct?

As for how to do that, I have no clue, but I found this page:

https://github.com/ornicar/lila/wiki/Lichess-Development-Onboarding