How to customize margin or padding for chart columns?

Hi Mr/Mrs,

I have issue margin or padding for chart columns. I have been written some code as follows:

> <RadzenColumnOptions Margin="5" Radius="5" Width="20" />
> <RadzenCategoryAxis Padding="5" />
> <RadzenBarOptions Radius="5" Height="20" Margin="30" />

But when result as follow:

Please, help me fix this issue margin or padding some column! Thanks so much