3 level vertical menu , in pure Html + Css Or Html + Css + Vanillajs

Project overview

Build a menu component in pure css or only css + vanillajs the reason to use only css + vanilla rather than just use other js library is that it will be used with a system created in bootstrap2.

Category IT & Programming
Subcategory Web design
What is the scope of the project? Small update to an existing design
Is this a project or a position? Project
I currently have I have the design
Required availability As needed
Specific need Other
Other Web Design Develop an isolated component

Delivery term: Not specified

Skills needed