Web-  
 

W3C  World Wide Web 
Consortium,  
   
  Internet
(, HTML, CSS, 
XML  .). Microsoft, The 
Mozilla Foundation   
   
W3C 
    
   
.

    
   web/wap-
, , , 
,    
 -
  
/.  
   
   
    
,
  
  Mozilla, 
Internet Explorer, Opera   
  
 .

   , 
   
  web/wap-
.  , , 
 
 , 
   
,     
,   
  
.   
,   
   W3C  
  CSS  
 .

CSS validator/

    
 CSS-
, W3C   
 validator, 
 
  
/stylesheet  
  
   
 ,   CSS  
.

 validator   
   : 
http://jigsaw.w3.org/css-
validator/

 validator   
;   
,   
   
  
 ,   
 . 
 
