Ok I have been messing with it and it's in a decent state now.
I made a very very short visual novel in css/html
You can try it out at https://cosmix.pics/slime

Sadly I'm using a new feature that Firefox hasn't got, I apologize.
Any feedback is welcome about this. I know it's a bit silly.
"why is it all css? Why no JavaScript?" Mainly cuz I wanted too.