lack of style and functionalities in to-do list.

In To-do section there is edit and cancel buttons are missing. Style is not added for this list.

**To Reproduce**
Steps to reproduce the behavior:
1. Add Edit button and Cancel button.
2. Add some styles in list.
3. Add JS for different functionality.

**Expected behavior**
Allow user to delete, edit, cancel and mark as Done to List.

No files or tests are named. Start by locating the To-do section's markup and JavaScript, then verify the list supports edit, cancel, delete, and mark-as-done actions with the requested styling.

由索引模型根据 Issue 内容生成。