All solutions

1. Trying to use more "em" and "rem", is it correct to use that way?
2. As a simple challenge, but very good to train some CSS skills, hit me with some ideas of what to do correctly.
3. Been struggling to know how to separate the paragraph as well as the preview one, so used <br/> tags, is it correct that way?

Starting to do these projects to improve my CSS skills. Still having some problems centering the div correctly on the center of the page. If someone has some opinions and best practice comments to do, go ahead :)