came here to say the same. First few examples are about float and cleafix - I haven't faced those in years now! Not sure I agree about the triangles and other

came here to say the same. First few examples are about float and cleafix - I haven't faced those in years now! Not sure I agree about the triangles and other shapes. background-img and linear-gradients allow for some nice solutions and avoid having to load or deal with an image. Just for fund, check https://a.singlediv.com/ https://a.singlediv.com/ from Lynn Fisher, she draws some pretty awesome stuff mostly with linear-gradients :)