const header_links = document.getElementById("header-links"); const hamburger = document.getElementById("header-links-toggle"); document.addEventListener("click", event => { if (!header_links.contains(event.target) && !hamburger.contains(event.target) && !header_links.href) { header_links.classList.remove("open"); } }); hamburger.addEventListener("click", event => { header_links.classList.toggle("open"); });