zentao/module/datatable/css/ajaxcustom.ui.css

.edit-cols .modal-title {flex: none;}
.edit-cols .border:not(:last-child) {border-bottom: none;}
.edit-cols .border {border-color: #D8DBDE;}
.edit-cols .required-col {background: #F4F5F7 !important;}
.edit-cols li:hover {background: #E6F0FF;}