gestiojeux/mainsite/templates/partials/base_js.html

<script>
  function mobile_nav_toggle() {
    $("nav > a").slideToggle(300);
  }

  $(window).resize(function () {
    if(window.innerWidth > 475) {
      $("nav > a").show(0);
    }
    else {
      $("nav > a").hide(0);
    }
  });
</script>