Layout

To set the –wp–style–root–padding

{
	"settings": {
		"useRootPaddingAwareAlignments": true
	},
	"styles": {
		"spacing": {
			"padding": {
				"top": "1rem",
				"right": "1rem",
				"bottom": "1rem",
				"left": "1rem"
			}
		}
	}
}

To set the layout :

{
	"settings": {
		"layout": {
			"contentSize": "840px",
			"wideSize": "1100px"
		}
	}
}