Can't get multi level menu working

Question

Today i have been messing around with the below code but have run in to some issue. If you click the menu icon, the 'About' option i want to be able to click for more links so it would become a parent but no matter what i just cant seem to get it working, it always appears underneath.
https://code.sololearn.com/WqqudyrGMBaj/?ref=app

Answer 1

So you want to open another dropdown menu under about option?

Answer 2

nest the 'about us' inside the <li></li> element of 'about'.

this way 'about us' is visible when opening the main menu.

Answer 3

Sorry for not explaining but the About link when clicked needs to display a seperate submenu with 'About Us', 'FAQs', etc