renderContent(deleteTreatment) {
  const allowDelete = deleteTreatment.treatment === "on";
  return (
    <div className="todoListMain">
      <div className="header">
        <form onSubmit={this.addItem}>
          <input
            ref={(a) => (this._inputElement = a)}
            placeholder="Enter Task"
          ></input>
          <button type="submit">Add</button>
        </form>
      </div>
      <TodoItems
        entries={this.state.items}
        allowDelete={allowDelete}
        delete={this.deleteItem}
      />
      <TodoItems
        entries={this.state.items}
        allowDelete={allowDelete}
        delete={this.deleteItem}
      />
    </div>
  );
}