Use bootstrap 3.3.7
Sidebar for mobile like google mobile sidebar (smooth)
Add with the icon plus and less for the submenu
Navigation add the sub sub menu, add it to the sidebar too.
example: [url removed, login to view] (mobile version)
10 freelancers are bidding on average $33 for this job
Hi I read your job very carefully. I have rich experience about (Cake Php, Codeigniter, Laravel, Nodejs, Html, Html5, Css, Css3, Jquery, Bootstrap,Mysql) for 9 years. Stay tuned, I'm still working on this proposal.