How to create 3x3 grid menu in react native without 3rd party lib??

I want to create grid center menu in react native, I just read the doc and looks good to start, but I have a problem...

Create a 4x4 responsive grid of squares with a margin of 20px on each side of the container??

I want to create a grid of responsive 4x4 squares with a margin of exactly 20px on the left and right sides of the o...

GridLayout of Buttons to Output a Checkerboard?

I am programming in Java and am still rather new. Experimenting with GUI Basics, I decided to make a checkerboard wi...