- Adding a new item to the "TODO" tasks list.
- Editing an item in the "TODO" tasks list.
- Deleting an item from the "TODO" tasks list.
- Marking an item as "COMPLETED" and moving it to the corresponding list via the checkbox.
- Deleting an item from the "COMPLETED" list.
- Editing an item in the "COMPLETED" list.
- Marking an item as incomplete via the checkbox and moving it into the "TODO" tasks list.
- The appearance of the application has not been changed.
- Alternate text is present for all necessary images.
- The delete button animation works.
