Snake Game

Thanks to https://www.codingnepalweb.com/ for the code resources. I was very bored in my game class because the game is really looonnnngggg. So that i found at that web from someone in my following. And yeah, I changed the code a bit. I'm trying to understand the codes, mainly the javascript. I try to add some little things like, footer, the is from https://www.w3schools.com/.