Compat.spec.whatwg.org
Compatibility Standard
A technical documentation site explaining web platform features browsers need to support for better compatibility with the modern web.
Learn about essential web compatibility features
The Compatibility Standard site provides detailed documentation on the web platform features that browsers should support to ensure compatibility with the modern web. It focuses on aspects like CSS rules, vendor-prefixed properties, and other technical requirements that help unify how websites work across different browsers.
If you work in web development or browser engineering, you'll find this resource valuable for understanding which features are considered essential for compatibility. The site breaks down various topics, such as CSS at-rules, media queries, and legacy property aliases, making it easier to see what needs to be implemented or supported.
Whether you're building a new browser, maintaining a web platform, or just curious about the standards behind the web, this documentation helps clarify what makes the web function smoothly for everyone.
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