Drupal How to: Build a slideshow in a slideshow with Paragraph and slick

For a web project I'm currently developing, I had to find a way to serve a slideshow in another slideshow. IMHO it's a good UI solution to serve content smart, fast and responsive, which is a base requirement for mobile web devices. After some research I decided to go on with slick as slideshow base tool. Other slideshow tools aren't so flexible and extendable than slick carousel is.

The joint venture between slick carousel and the blazy library are also a very great effort to mobile users, to serve content compressed if necessary.