Web code

Question

I don't know why I can't change the start button black
https://sololearn.com/compiler-playground/WOq41056l0oN/?ref=app

Answer 1

the start button is a child of the .titleScreen div. It's gone with the div when you set the display to 'none' in the function startGame.

Answer 2

On which line?

Answer 3

line 40

40 document.getElementById('titleScreen').style.display = 'none';

you did this to hide the first div.
the problem is your button is inside that div, so it gets hidden too.

you don't have any button on your gameScreen.