Pronounced « Alix ». Because it's fun.
This CSS file intends to warn developers about possible risks and mistakes that exist in HTML code. It can also be used to roughly evaluate a site's quality by simply including it as an external stylesheet.
If you want to get involved in this project, be sure to take a look at its wiki. I'll be pleased to read your issues or pull requests!
Note that this bookmarklet might take a couple of seconds to load since it basically injects the
a11y.css stylesheet within the DOM of the page you're browsing. It might be a bit slow at first because it is being downloaded from GitHub, but it's the price to pay to keep it up-to-date.