render() {

    return (

      <React.Fragment>

        <h2>Regular Maintenance:</h2>

        <ItemList items={this.state.items} />

        <Formik

          onSubmit={values => {

            this.setState(prevState => ({

              items: [...prevState.items, values.item]

            }));

          }}

        >

          <Form>

            <label htmlFor="name">Item:</label>

            <Field type="text" name="item" />

            <button type="submit">Add Item</button>

          </Form>

        </Formik>

      </React.Fragment>

    );

  }