There are many examples of balance in this design. In the darker, more colorful card on the right balanced against the lighter more open care on the left as well as some one the more colorful cards, employing elements of balance in the own design.
This is an interesting design on how to properly use Indesign. As a freshman and somewhat rookie designer, it's cool to see how to properly use Indesign. I like how the artist stuck with a design and used the same theme throughout.