This discussion serves two purposes for me: 1) I'm truly curious to see what sorts of questions on CSS exist and 2) I'm working on creating more content around CSS, so I'm looking for good tutorial and blog ideas.

We find ourselves in a Renaissance of the CSS specification, but a lot of the basic fundamentals of CSS get left behind. This can be especially true for beginners. Those of us who have been writing CSS for a while focus on the "NEW" that's come out and don't often talk about the basics enough.

What are you biggest questions on CSS? Is it something with new CSS like Grid, Flex or Custom Properties? Is it a fundamental question about the CSS Box Model? Happy to discuss any of them in the comments and then also discuss them at length in future blog posts!