Overall this is a great solution, that solves 99% of our cases with success. As feedback, maybe the following features could be implemented as plus to improve it even better:

- When I don't have any control over the elements that I will receive (imagine from some API), we could assume a default number of elements (for example 5, or configurable), so that we can have something to be displayed.
- ExtendedClass could be a plus but not a major feature since we can reach that with other CSS rule.

Great work!

Great work!

Amazing work!