Very Simple Hamburger Menu For Mobile Layouts

Multi-Vendor Questions
1

Only a simple menu for mobile layouts

style and use it 

https://www.w3schools.com/code/tryit.asp?filename=G8AZMPZOITKN

menu moblie.PNG

2 
https://www.w3schools.com/code/tryit.asp?filename=G8C35IRBZ65M

or try this one bottom nav

it needs more styling ;)

bottom nav.PNG