Btw, I just found this, not the creator. Yeah, there are some issues, e.g. clicking to open a new modal inside a current one just scrolls to the top, but I always like to see how people can hack around these things, and checkboxes can be pretty powerful.
The modal is positioned and sized awkwardly, too narrow and low. Also when hitting the close X, it seems like the color and font styling including backdrop disappear before the animation starts, which is a little jarring.
Performs better than the JS versions. Could be good for SaaS services that target developers that you know have a high probability of running *nix systems.
Reminds me of the good old bad old days of web design, mis-using elements to make the browser do what you want. I don't think it's such a bad thing, although these days not needed so much.
