document.addEventListener("DOMContentLoaded", function () {
const links_questions = Object.values(document.getElementsByClassName('question-hyperlink'));
let links_visited = sessionStorage.getItem("visited") ? sessionStorage.getItem("visited").split(",") : [];
botons.forEach(boton => {
boton.addEventListener('click', e => {
e.preventDefault();
let atrib = link.href;
if(links_visited.includes(atrib)){
window.location.href = `${atrib}`;
}else{
links_visited.push(atrib);
sessionStorage.setItem("visited",links_visited.join(","));