• 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