Falling 'Matrix' code in canvas with ability to put in custom messages. See https://janemiceli.github.io/matrix

Matrix digital rain, Matrix code or sometimes green rain, is the computer code featured in the Matrix series. The falling green code is a way of representing the activity of the virtual reality environment of the Matrix on screen.

I used to scare my teachers in high school putting this up on the screen

My kids challenged me to put rainbows in matrix digital rain

https://janemiceli.github.io/matrix4