82. Cessation of order. A maintenance order shall cease to have any force or validity on the child attaining eighteen years. 83. Rules in respect of fees and costs. (1) The Rules Committee may make rules prescribing the fees and costs payable in any proceedings for application for an order under this Part. (2) The rules made under subsection (1) shall include provision for the remission of the fees and costs when the person liable to pay them does not have the means to do so. Maintenance during divorce, separation or nullity. 84. Maintenance during divorce, separation or nullity. (1) In all cases of divorce, separation or nullity, both parents shall continue to maintain and educate their child. (2) Where the child is in the custody of one parent, the other parent shall have reasonable access to the child. 85. Variation of custody. Where the court is satisfied on information from a probation and social welfare officer or an official of a local government council that the parent who has custody of the child is wilfully neglecting or mistreating the child, custody shall be granted to the other parent. 86. Upbringing of a child. In separation, divorce and nullity cases there shall be joint consultation between the parents in bringing up the child where the circumstances permit and wherever possible. 87. Unfit parents. Where the court during divorce, separation or nullity proceedings finds that the child is suffering or is likely to suffer significant harm as a result of both