Frond-End developer

Push blue button "Open" to start auto opening menu.

Auto mode of opening the menu - it should open with a delay of 1 second. Each subsequent submenu should also open with a delay of 1 second, until it reaches the last nesting.

Manual mode of opening the menu - it should save the history of open nesting. But when you switch menu should close history and open new menu.

Close button shoud close all submenus and menus with delay of 1 second.

Button "Stop" end auto opening or auto closing menu

• menu 1
  • submenu 1
    • submenu 1
      • submenu 1
        • item 1
        • item 2
        • item 3
      • submenu 2
        • item 1
        • item 2
        • item 3
      • submenu 3
        • item 1
        • item 2
        • item 3
    • submenu 2
      • item 1
      • item 2
      • item 3
    • submenu 3
      • item 1
      • item 2
      • item 3
  • submenu 2
    • item 1
    • item 2
    • item 3
  • submenu 3
    • item 1
    • item 2
    • item 3
• menu 2
  • submenu 1
    • submenu 1
      • item 1
      • item 2
      • item 3
    • submenu 2
      • item 1
      • item 2
      • item 3
    • submenu 3
      • item 1
      • item 2
      • item 3
  • submenu 2
    • item 1
    • item 2
    • item 3
  • submenu 3
    • item 1
    • item 2
    • item 3
• menu 3
  • submenu 1
    • item 1
      • item 1
      • item 2
      • item 3
    • item 2
      • item 1
      • item 2
      • item 3
    • item 3
      • item 1
      • item 2
      • item 3
  • submenu 2
    • item 1
    • item 2
    • item 3
  • submenu 3
    • item 1
    • item 2
    • item 3