- Cascading Style Sheet home page from w3.org - keeper of the official css standards
- CSS Tricks home page - dedicated to providing current information, tutorials, and code samples for css developers
- CSS home page w3schools.com - online css tutorial site
- 25 best CSS practices from a web development company
- Sample CSS reset code
- Provides HTML5 browser compatibility information
- Provides browser compatibility information for individual HTML elements, HTML attributes and CSS properties