How to Hide CSS from old browser

It is more than clear that Micorsoft and the rest of the computer world will not agree on specific CSS. This we see from the fact that we arrived at CSS 3 and there are still differences between this or that browser in reading style sheets. To work around this problem, you can create style sheets that are read only by the exclusion of all other browsers from seeing the page with that style. The CSS Check the chance to check compatibility of the browser to call @ import url (style.css); currently complies with the specifications of W3C and supported by all browsers, and gain an overview about CSS style from older browsers.

 

Browser IE
Win		 Opera Mozilla FF Ko Saf IE
Mac		 W3C CSS Validator
Rules 6+ 5.5 5.0 4 7+ 6 1.7+ 1.4 0.6+ 3.2 1.2 5.2 Y/N Err./Warn.
1 @import url("style.css"); + + + + + + + + + + + + Yes  
2 @import url(style.css); + + + + + + + + + + + + Yes  
3 @import "style.css"; + + + - + + + + + + + + Yes  
4 @import url("style.css") all; - - - - + + + + + + + + Yes  
5 @import url("style.css"); - - - - + - + + + - - - Yes  
6 @import url("style.css"); - - - - + - + + + - - - Yes  
7 @import url("style.%63ss"); + + + + + + + + + + + + Yes  
8 @import/**/"style.css"; + + - - + + + + + + + - Yes  
9 @import "style.css"/**/; + - - - + + + + + + + - Yes  
10 @import url(/**/"style.css"); + - - - - - + + + - - - Yes  
11 @imp\6F rt url("style.css"); + - - - - - + + + - - + Yes Warning
12 @import\**\"style.css"; - + - - - - - - - - - - Yes Warning
13 @im\port url("style.css"); + - - - - - + + + - - + Yes Warning
14 @import\ url("style.css"); - + + + - - - - - - - - Yes Warning
15 @import_url("style.css"); - - + + - - - - - - - + Yes Warning
16 @import "style.css";
Non-Breaking Space (Alt-0160) after @import		 - + + - - - - - - - - - Yes Warning
17 @import "style.css";
Non-Breaking Space (Alt-0160) before @import		 + + + - - - - - - - - - No Error
18 @import "style.css" ;
Non-Breaking Space (Alt-0160) before ;		 + + + - - - - - - - - - No Error
19 @import url ("style.css");
Non-Breaking Space (Alt-0160) after url		 - + - - - - - - - - - - No Error
20 @import: url("style.css"); + + + + - - -   -       No Error
21 @ import url("style.css"); - + - - - - - - - - - - No Error
22 @import url ("style.css"); + + - - - - - - - - - - No Error
23 @import style.css; + + + - - - - - - - - - No Error
24 _@import "style.css"; - - + - - - - - - - - - No Error
25 @import url("style.css")_; - - - - - - - + + - - - No Error
26 em{color:red};@import url("style.css"); - + + + - - - - - - - - No Error
27 \@import url("style.css"); - - + + - - - - - - - - No Error
28 @import url\ ("style.css"); + - - - - - - - - - - - No Error
29 @import ur\6C ("style.css"); + - - - - - + + + - - + No Error
30 @import(style.css); - - - - - - - - - -   + No Error
31 @import url("style.\63 ss"); + - - - + + + + + + + + No Error
[Bad Request]
32 @import url("style.
css");		 + + + + - - - - - - - - No Error
33 @import url("style.\
css");		 + - - - + + + + + - - + No Error
[Bad Request]

Come nascondere il Css ai browser. Compatibilità e specifiche W3C