I took this course and it really is superb. Josh builds mental models like media queries as IF statements and compares selector specificity to prototypal inheri

I took this course and it really is superb. Josh builds mental models like media queries as IF statements and compares selector specificity to prototypal inheritance. It's mentally really sticky stuff. He also goes in depth into the different layout modes(flow, position, flex, grid) and ensures you know the differences between them, when to use one over the other, in which cases one overrides the other, etc. If when youre building something you go through every combination of flex, grid, & position and not really sure which one is going to get you closer to the layout you want, these exercises will build your confidence. He breaks down lots of edge cases and quirks that go into CSS that Id consider "mastery" level that only someone who dreams in CSS would know off the top of their head. Note: Not affiliated in any way.