$font-families: (
    sans : '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif',
    fixed : 'Consolas, "Liberation Mono", Menlo, Courier, monospace',
    icons: 'Fontawesome'
);
$font-weights: (
        thin : 100,
        light: 300,
        normal: 400,
        medium: 500,
        bold: 600,
        extrabold: 700,
);
$font-sizes: (
        xxs : .65rem,
        xs : .75rem,
        s: .85rem,
        default: 1rem,
        m: 1.2rem,
        l: 1.8rem,
        xl: 2.5rem,
        xxl: 4rem,
);
$line-height: 1.5;