help with resotoring the css pseudo class

Question

Can anyone help with restoring the css pseudo class hover to the elements after refreshing the board?
https://code.sololearn.com/W08lvBGjmGgX/#

Answer 1

Please always tag the language you're asking about.
https://code.sololearn.com/W3uiji9X28C1/?ref=app

Answer 2

Done

Answer 3

I was able to solve the problem.

this line breaks the code:
moves[number].style.backgroundColor = 'green';
this is the fix:
moves[number].classList.add('colorWinner');
where the 'colorWinner' class is defined in the stylesheet as {background-color:green}

apparently using the .style property disassociates the element from the style sheet. so if you need dynamic styling of elements make changes solely through the classList or solely through the .style property