​<script>
    jQuery(document).ready(function() {

        jQuery("#dd-menu-mobile ul li a").attr("onclick", "menuClose()");
        jQuery(".dd-cta-close").attr("onclick", "menuClose()");

    });

    function menuClose() {
        var element = document.getElementById("dd-section");
        element.classList.toggle("dd-m-menu");
    }

</script>