kd-aiot-frontend-wt/lib/vue-form-making-v3/src/styles/print.scss

.fm-form{
  &.is-print{

    &:not(.fm-vant-form) {
      background: #fff;
    }

    .print-read-label {
      color: #000 !important;
    }

    .el-form-item__label,
    .el-collapse-item__header,
    .el-card__header,
    .ant-form-item-label label,
    .ant-collapse-header,
    .ant-card-head{
      color: #000 !important;
    }

    .el-collapse-item__header{
      font-weight: bold;
    }

    .el-card,
    .ant-card,
    .ant-collapse-content{
      background: #fff;
    }
  }
}