document.querySelectorAll('.accordion').forEach(function(accordion) { const header = accordion.querySelector('.accordion-header'); const content = accordion.querySelector('.accordion-content'); const title = header.textContent.replace(' +', ''); header.addEventListener('click', function() { if (content.style.display === 'block') { content.style.display = 'none'; header.textContent = title + ' +'; } else { content.style.display = 'block'; header.textContent = title + ' −'; } }); });