Countdown on Plone

Does anybody knows if it is possible to add a big countdown on the homepage of my Plone website?
I need to do the websit of an event and it would be great to have this big countdown ...

Looking at as an example or our counter on In general: a few lines of Javascript code. The "big" aspect: use CSS for styling as needed.


Like this?

Or more likely, this:

All the code is in the 'Multitheme' project, read more here: