(1) The descendants are obliged to maintain before the ascendants.
(2) Among the descendants and among the ascendants, the closer relatives are liable before the more distant relatives.
(3) More than one equally close relative are liable on a pro rata basis on the basis of their gainful employment and financial circumstances. The parent who is caring for a minor child fulfils their obligation to contribute to the maintenance of the child as a rule by caring for and rearing the child.