how do I know if a document is in css or css3?

Question

anonymous · Answer

css3 is just a new version of css. It just has more properties. http://www.w3schools.com/cssref/default.asp On the right it will tell you if the property is version 1 or version 3

e.mccormick · Answer

Most people seem to suggest using a script to detect if the browser supports css3.

javk · Answer

I don't get it...does the browser determine which version of css?

e.mccormick · Answer

What the file contains determines if it is CSS1, 3, etc.  However, not all browsers support 3.  So what people are doing is using a script to detect what the browser supports, then change the page content based on those results.

javk · Answer

ok...so does that mean that the only thing that determines if the file is a css3 file would be if the file contained some new features that were added in css3?

e.mccormick · Answer

From what I have read so far, yes.