transform-origin
transform
Values
$bb-transform-origin-values: ('center': center,'tl': left top,'tr': right top,'bl': left bottom,'br': right bottom,'cl': left center,'cr': right center,'ct': center top,'cb': center bottom);
Config
$bb-transform-origin-config: ('name': 'tf','prop': 'transform-origin','bps': $bb-bps,'values': $bb-transform-origin-values);