multiple buttons to open gallery

code.js

<script>
document.addEventListener("DOMContentLoaded", () => {

    const buttons = document.querySelectorAll(".graphic_gallery");

    buttons.forEach((button) => {

        const prevSibling = button.previousElementSibling;
        const firstItem = prevSibling.querySelector(".bricks-lightbox");

        button.addEventListener("click", (event) => {
            event.preventDefault();
            firstItem.click();
        });

    });

});
</script>