CSS has a very rewarding learning curve, but it's also a much longer path than what you show in this article. There's many more concepts to learn, and even after that, the way they interact adds another layer of complexity. To name just a few, consider
positioning and z-indices
flex and grid layouts
transitions
media- and other queries
transitions and keyframes
variables
...
These are all things one has to eventually learn before claiming that one has truly "learned CSS". And they're all amazing tools worth having a good look at.
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CSS has a very rewarding learning curve, but it's also a much longer path than what you show in this article. There's many more concepts to learn, and even after that, the way they interact adds another layer of complexity. To name just a few, consider
These are all things one has to eventually learn before claiming that one has truly "learned CSS". And they're all amazing tools worth having a good look at.