function solve() {
    let arr = ['onclick', 'JSON.stringify()', 'A programming API for HTML and XML documents'];
    let index = 0;
    let rightAnswers = 0;
    Array.from(
        document.querySelectorAll(".quiz-answer")
    ).map(el => el.addEventListener('click', function asd(e) {
        if (arr.includes(e.target.innerHTML)) {
            rightAnswers++;
        }
        let currentSelection = document.querySelectorAll('section')[index];
        currentSelection.style.display = 'none';
        let nextSelection = document.querySelectorAll('section')[index + 1];
        if (nextSelection !== undefined) {
            nextSelection.style.display = 'block';
        } else {
            document.getElementById("results").style.display = 'block';
            if (rightAnswers === arr.length) {
                document.getElementById("results").classList.remove('none');
                document.querySelector("#results > li > h1").innerHTML = "You are recognized as top JavaScript fan!";
            } else {
                document.querySelector("#results > li > h1").innerHTML = `You have ${rightAnswers} right answers`;


            }
        }
        index++;
    }));
}