// Utilities $font-sizes: map-merge( $font-sizes, ( 'base': $font-size-base, 'xs': $font-size-xs, 'sm': $font-size-sm, 'lg': $font-size-lg ) ); // Override utilities map to add new classes $utilities: map-merge( $utilities, ( "font-weight": ( property: font-weight, class: fw, values: ( light: $font-weight-light, lighter: $font-weight-lighter, normal: $font-weight-normal, medium: $font-weight-medium, semibold: $font-weight-semibold, bold: $font-weight-bold, bolder: $font-weight-bolder, extrabold: 800, black: 900, ) ), "font-size": ( rfs: true, property: font-size, class: fs, values: $font-sizes ), "letter-spacing": ( property: letter-spacing, class: tracking, values: ( tighter: -0.05em, tight: -0.025em, normal: 0, wide: 0.025em, wider: 0.05em, widest: 0.1em ) ), ) );