CSSRule

const unsigned short CHARSET_RULE = 2; 

attribute DOMString cssText setter raises (DOMException); 

const unsigned short FONT_FACE_RULE = 5; 

const unsigned short IMPORT_RULE = 3; 

const unsigned short MEDIA_RULE = 4; 

const unsigned short PAGE_RULE = 6; 

readonly attribute CSSRule parentRule; 

readonly attribute CSSStyleSheet parentStyleSheet; 

const unsigned short STYLE_RULE = 1; 

readonly attribute unsigned short type; 

const unsigned short UNKNOWN_RULE = 0; 

const unsigned short VARIABLES_RULE = 7; 

const unsigned short WEBKIT_KEYFRAME_RULE = 9; 

const unsigned short WEBKIT_KEYFRAMES_RULE = 8;