SitePoint : SitePoint provides cutting-edge content for web professionals — developers, designers, programmers, freelancers and site owners.
Explorer Exposed! : These CSS bugs are all found only in Internet Explorer, versions 5 and higher. To see the demos properly, they must be viewed in IE, of course.
Dark Patterns Library : A Dark Pattern is a type of user interface that has been carefully crafted to trick users into doing things, such as buying insurance with their purch...
CSSdoc : This is a draft to bring automatic documentation to CSS files, like its known for JavaScript and PHP files through JavaDoc/DocTags.
Linked Data : This site exists to provide a home for, or pointers to, resources from across the Linked Data community.
Web Platform Docs is a community-driven site that aims to become a comprehensive and authoritative source for web developer documentation.