CSS Reference

This CSS Reference lists all standard CSS properties, pseudo-classes and pseudo-elements, @-rules, and selectors in alphabetic order. It allows you to quickly access detailed information for each of them. It not only lists the CSS1 and CSS2.1 properties, but also is a CSS3 reference that links to any CSS3 property and concept standardized, or already stabilized.

See also Mozilla CSS Extensions for Gecko-specific properties prefixed with -moz; and WebKit CSS Extensions for WebKit-specific properties. See Vendor-prefixed CSS Property Overview by Peter Beverloo for all prefixed properties.

Selectors

• Basic Selectors
  • Type selectors elementname
  • Class selectors .classname
  • ID selectors #idname
  • Universal selectors * ns|* *|*
  • Attribute selectors [attr=value]
• Combinators
  • Adjacent sibling selectors A + B
  • General sibling selectors A ~ B
  • Child selectors A > B
  • Descendant selectors A B
• Pseudo-elements
• Pseudo-classes

CSS3 Tutorials

These small how-to pages describe new technologies appeared in CSS3, or in CSS2.1 but with low support until recently:

• How to use Media queries
• How to use CSS Counters
• Using CSS gradients
• Using CSS transforms
• Using CSS animations
• Using CSS transitions
• Using CSS multiple backgrounds

Concepts

• CSS syntax
• At-rule
• Comments
• Specificity
• Initial value
• Inheritance
• Specified value
• Computed value
• Used value
• Actual value
• Box model
• Replaced element
• Value definition syntax