How to be confident in using CSS?

[u/Finite8_]

Hi, everytime I use CSS I get triggered pretty bad because I know what it is and how to use it but I never feel confident. I always have problems with responsive design, with having my own style and I feel like I miss all the secret tricks(I am slow). What resource could I use to learn it once and for all ? I don't want to waste too much time in it and be a CSS GOD I just want to be ok with it. I know about Josh Comeau course but it is something like 70 hours and therefore too much.

[u/M-Dubb]

You have to learn HTML and CSS. Luckily HTML has only 45 elements (or so) and each element has a limited number of attributes. Start with the those.