/* 一级菜单居中 */
#nav .menus_items {
  position: absolute !important;
  width: fit-content !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
}
/* 子菜单横向展示 */
#nav .menus_items .menus_item:hover .menus_item_child {
  display: flex !important;
}
/* 这里的2是代表导航栏的第2个元素，即有子菜单的元素，可以按自己需求修改 */
.menus_items .menus_item:nth-child(5) .menus_item_child {
  left: -38px;
}