Practical approaches to Universal Design for making your website/webapp accessible to everyone.
cheat allows you to create and view interactive cheatsheets on the command-line. It was designed to help remind *nix system administrators of options for commands that they use frequently, but not frequently enough to remember.
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Handy cheat sheets for a huge array of web technologies.
A simple visual cheat sheet for Flexbox.
Handy cheat sheet for writing CSS with Sass.
Handy cheat sheet for the short-hand HTML syntax Emmet.