I wrote a tutorial on how to create a simple responsive navbar using flexbox and media queries.

👇
https://adiati.com/how-to-create-a-responsive-navigation-bar-with-flexbox-and-media-queries

DEV:
https://dev.to/adiatiayu/how-to-create-a-responsive-navigation-bar-with-flexbox-and-media-queries-4m7j

CodeNewbie:
https://community.codenewbie.org/adiatiayu/how-to-create-a-responsive-navigation-bar-with-flexbox-and-media-queries-4fj6