Cards not shuffling in memory game [closed]

I’m trying to shuffle some cards from my memory game and I can’t figure out why the shuffleCards function won’t work:

const cards = document.querySelectorAll('.card');

function shuffleCards() {
    cards.forEach(card => {
        let randomPos = Math.floor(Math.random() * 12);
        card.style.order = randomPos;
    });

};