anchor.diff:  	;
   	
   elem
  -	:     IDENT 
  -	| '#' IDENT 
  -	| '.' IDENT 
  +	:(IDENT)+ 
  +	|(idSelector)+ 
  +	|(classSelector)+ 
  +	;
  +
  +idSelector
  +	:'#' IDENT
  +	;
  +	
  +classSelector
  +	:'.' IDENT
   	;
   
   pseudo
  
positive.code: 	;
  	
  ruleset
   	: selectors '{' properties? '}'
  	;
  	
  selectors
  
negative.code: 	;
  
  SL_COMMENT
  	: '//' ~[\r\n]* -> skip
  	;
  	
  COMMENT
  