Which CSS hack can pass the w3c validation?

Which css hacks we use to make layout cross browser compatible

• Can pass W3C validation
• Will work forever
• Will never create in any future browser versions

What are alternatives which can pass the w3c validation for popular CSS hack which are not valid?

for example

underscore hack, zoom:1 etc.

my purpose is to make a list of W3C validated and non problematic CSS hacks and techniques which can be helpful to make CSS layouts cross browser compatible.

mainly we use CSS hacks for IE , but sometime we need Hacks for other desktop browsers also.

Main Concerned browsers are:

• IE6, IE7, IE8
• Safari latest final release
• Firefox 3.6,开发者_运维百科 3.5 , 3.0 and 2.0
• Opera Latest final release
• Google Chrome latest

Here is the list:

1. Easy selectors
2. Minimized attribute selectors
3. !important
4. @import "non-ie.css" all;
5. body[class|="page-body"]

They are listed here: In-CSS Hacks.

However, nobody promise they will work forever.

The best approch for IE hacks is to use conditional comments.