[Grid] Change spacing

How can I change spacing of Grid component as it doesn’t respect theme.spacing.unit

I want <Grid container spacing={8}> to have margin: -5px and its <Grid item> to have padding: 5px. I did this in overrides key of theme.

MuiGrid: {
  container: {
    '&$spacing-xs-8': {
      margin: -5,
    }
  }

It worked with the container but not the item. How can I select Grid children of this container

[Richtervn]

@mediafreakch yeah. I used overrides.

Here is an example how I override MuiGrid spacing={16}

container: {
    '&$spacing-xs-16': {
      width: `calc(100% + ${spacing.unit * 2}px)`,
      margin: -spacing.unit,
      '& $item': {
        padding: spacing.unit
      }
    }
  }

[oliviertassinari]

Yes