Improve Visual impairment

It is too easy to pass this step by looking the markup:

![Image](https://github.com/user-attachments/assets/317542c5-4055-4848-b1b1-74205e16a4ba)

We can obfuscate `id`s to make it less obvious for instance.
However I understand that `aria-label`s are here for screen reader users so I doubt that it will be easy to find a better solution.