@miguendes
Yes, absolutely. When I started
doing challenges from Frontend Mentor, I only know very basic css. I have improved a lot by working on the challenges from Frontend Mentor. They have challenges with varying difficulty. I started doing the least difficult challenges first to get confidence.
Here are the challenges that I did so far. You can see that many of them are very basic for a person with good grasp on css.
frontend-mentor.bhanuteja.dev
They even have an amazing slack community to get help from if you are stuck.