const headers = document.querySelectorAll(".accordion-header");
    headers.forEach((header) => {
        header.addEventListener("click", () => {
            if (header.classList.contains("is-open")) {
                header.classList.remove("is-open");
            } else {
                const headersWithIsOpen = document.querySelectorAll(".is-open");
                headersWithIsOpen.forEach((headerWithIsOpen) => {
                headerWithIsOpen.classList.remove("is-open");
                });
                header.classList.add("is-open");
            }
        });
    });