svg
$bb-stroke-width-values: ( '1': 1, '1.5': 1.5, '2': 2, '2.5': 2.5, '3': 3, '3.5': 3.5, '4': 4);
$bb-stroke-width-config: ( 'name': 'st', 'prop': 'stroke-width', 'bps': $bb-bps, 'values': $bb-stroke-width-values);