1const theme = createMuiTheme({
2  spacing: [0, 4, 8, 16, 32, 64],
3});
4
5theme.spacing(2); // = 8

1const theme = {
2  spacing: [0, 2, 3, 5, 8],
3}
4
5<Box m={-2} /> // margin: -3px;
6<Box m={0} /> // margin: 0px;
7<Box m={2} /> // margin: 3px;

1<Box m={2} pt={3}>
2  <Button color="default">
3    Your Text
4  </Button>
5</Box>