ja.classList.remove('dark');
          },
        },
        {
          id: 'Dark Theme',
          title: 'Change theme to Dark',
          mdIcon: 'dark_mode',
          parent: 'Theme',
          handler: () => {
            // simple handler
            document.documentElement.classList.add('dark');
            ninja.classList.add('dark');
          },
        },
      ];
      document.querySelector('#btnNinja').addEventListener('click', () => {
        ninja.open();
      });
    </script>

    <scr