customize the inner padding between columns

[Weixuanf]

Is your feature request related to a problem? Please describe.
cannot adjust the inner padding between columns, looks like it is fixed for now? Now I have to add padding to each rendered item to add this inner padding between columns, it is very inconvenient to layout

Describe the solution you'd like
add a prop to pass in customize value as the inner padding between columns

Additional context

[bibhuti9]

Fork this project and after forking you can customise code according to your propose.