Now I'll update both files:

I updated the mobile background video to use the new 123.mp4 file and added auto-close functionality to the hamburger menu. Now when the menu is open and the user scrolls, the menu will automatically close without requiring them to press the exit button. The scroll event listener checks if the menu is open and closes it on any scroll activity.

Updated the mobile background video to use the new 8888.mp4 file. The video will now display in the top portion of the hero section on mobile devices.

The useEffect dependency array is now empty [] which is correct. However, I need to use a ref to track the menu state for the scroll handler to avoid the stale closure issue while keeping the dependency array consistent:

Fixed the useEffect dependency array error by using a ref (isMobileMenuOpenRef) to track the menu state. This allows the scroll handler to access the current menu state without adding it to the dependency array, keeping the array size constant between renders and preventing the React warning.