$letter-spacing:(
    "letter-spacing": (
        type: 1,
        status: $letter-spacing-status,
        responsive: $letter-spacing-responsive,
        property: (
            name: letter-spacing,
            class: null,
            list:(
                normal: 0,
                xs: 0.01em,
                sm: 0.02em,
                md: 0.03em,
                lg: 0.04em,
                xl: 0.05em,
                2xl: 0.06em,
                3xl: 0.07em,
                4xl: 0.08em,
                5xl: 0.09em,
                6xl: 0.10em,
                7xl: 0.11em,
            )
        )
    )
)