MDN already has a bunch of courses on css: https://developer.mozilla.org/en-US/docs/Web/CSS https://developer.mozilla.org/en-US/docs/Web/CSS If you are alread

MDN already has a bunch of courses on css: https://developer.mozilla.org/en-US/docs/Web/CSS https://developer.mozilla.org/en-US/docs/Web/CSS If you are already familiar with basic CSS skipping to the middle is fine. A lot of modern CSS is just discovery of what you can do since none of it is really all that intuitive, but I generally end up googling "how can I do X effect in CSS" and seeing what the consensus is. Just as some examples, you can do responsive bars that move all over the page, change their contents, have togglable collapse menus, have dropdown menus in those menus, etc all in plain CSS, but you can't have multiple columns of arbitrary sized elements in left to right top to bottom order. Learning CSS is really just learning the contemporary limits of what you can do and then ruining your lovely responsive grids and flexboxes with absolute positioned px garbage when you have to support IE as penance for your crimes.