Project 80% complete

Hi there. This is a general question so no code needed. I was doing my “product landing page” to pass the test and when no error was found i was prompted to the usual page that tells you that the project is completed so you can pass to the next module. Only that this time while i passed it said that its 80% complete. While it is not a problem it itself, I would like to know: what else should I do to have 100% complete? Is it a problem of adding more CSS stuff? All the requirements were met, thats for sure.

If you complete also the 5th project you get 100%

Thank you, Ilenia, so no extra code needed.