     notification
                        .classList
                        .remove('show');
                }, 2000);
            }

            loadMindMap();

            document.addEventListener('DOMContentLoaded', () => {
                const editButton = document.getElementById('edit-btn');
                const cancelEditButton = document.getElementById('cancel-edit');
                const saveEditButton = document.getElementById('save-edit');

                editButton.addEventListener('click',