bootstrap如何隐藏div

  <div>                                <div>                                    <label>{{taskId}}</label>                                    <div>                                        <input>                                    </div>                                </div>                                <div>                                    <label>{{msgId}} </label>                                    <div>                                        <input>                                    </div>                                </div>                                <div>                                    <label>{{createTime}}</label>                                    <div>                                        <input>                                        <span>                                            <i></i>                                        </span>                                    </div>                            </div>                            <div>                                <label>{{to}}</label>                                <div>                                    <input>                                    <span> <i></i>                                    </span>                                </div>                            </div>                       </div>