What are difference css 2.0 and css 3.0?

Answer 1

CSS 3 contains the old CSS specifications and new modules has been added.

Example of new modules:

• Background and border styles
• Box
• Text effects
• Transformations
• Animations
• Selectors

Answer 2

The biggest difference in the new pseud-classes and selectors. There were 16 new pseudo-classes introduced in CSS 3, among them the :nth-child pseudo-class, the :empty pseudo class, and the :not(s) pseudo-class.

Three new CSS selectors were also added:

• element[foo^="bar"] matching an element with the attribute foo whose value begins with "bar" i.e.
• element[foo$="bar"] matching an element with the attribute foo whose value ends with bar. i.e.
• element[foo*="bar"] matching an element with the attribute foo which contains the string "bar" i.e.

CSS 3 also added support for several new background properties, as well as makes it possible to set an image as a border. Rounded borders, and box shadows were added.

Support for columns was supposed to have been added, but to date, internet Explorer still doesn't support them, and Firefox, Safari, and Chrome use proprietary extensions, rather than the CSS standard.

There's more, including modules and some fun text-shadow stuff. You can read all about the changes and new features at the related link(s).

Answer 3

CSS 2.0 includes everything CSS 1.0 has, plus more. It includes more properties that a user can define to elements, and some more attributes you can define to previous properties.