I must admit that the front-end program of FreeCodeCamp is really technical and is more focused on building functionality for a website rather then building complex layouts.
How about more practice in making web pages? Let’s take a beautiful landing page from f.e. themeforest and code it ourselfs? No picking in Page Source!
Use all the super power you already have: Sass, flexbox, other css/js libraries.
Who dares to take this challenge?