reviews.js

const authors = document.querySelectorAll('#reviews .authors h1');
const comments = document.querySelectorAll('#reviews .comments .comment p');
let counter = 0;

interval = setInterval(() => {
    if(counter%2===0){
        authors.forEach(author => {
            author.classList.remove('move-to-zero');
            author.classList.add('move-to-minus-one-hundred');
        });
        comments.forEach(comments => {
            comments.classList.remove('move-to-zero');
            comments.classList.add('move-to-minus-one-hundred');
        });
        comments[0].style.opacity = '0';
        comments[1].style.opacity = '1';
    } else{
        authors.forEach(author => {
            author.classList.add('move-to-zero');
            author.classList.remove('move-to-minus-one-hundred');
        });
        comments.forEach(comment => {
            comment.classList.add('move-to-zero');
            comment.classList.remove('move-to-minus-one-hundred');
        });
        comments[0].style.opacity = '1';
        comments[1].style.opacity = '0';
    }
    counter++;

}, 3000);