Summary
In this chapter, you encountered the Angular Academy application for the first time and learned how CSS Custom Properties can be used to implement the theme picker using a theme service. Along the way, you also had a brief first encounter with the YouTube Player in the course list.
In the next chapter, we will dig deeper into how to use the YouTube Player and how you can combine a curriculum of YouTube videos using the Angular components you learned about in Part 1, A Quick and Functional Guide to Angular Ivy.
