I began learning HTML and CSS in late 2021. When I first began it was very unclear as to the path to be taken to learn these technologies. It's easy to forget how poweful CSS is in this era where frameworks like Bootstrap and Tailwind exist. This lead to me dropping the idea altogether. This year, however, I chose to give it another try with the mindset of 'one thing at a time'. And in hindsight I can say that it the probably the best mindset, especially for CSS. Dividing projects into parts and those parts into more subparts made designing as easy as it can get. The beauty of CSS is in it's simplicity if only the right mindset is employed. You can checkout my HTML-CSS portfolio to see what kind of projects I've done.
I have also written some articles on CSS which you might find helpful: