BrowserVersionOwn?TypeAs String
Chrome81.0.4044???
Chrome86.0.4240ownfunctionfunction CSSPropertyRule() { [native code] }
Chrome88.0.4301???
Edge86.0.622ownfunctionfunction CSSPropertyRule() { [native code] }
Edge87.0.651???
Edge87.0.658ownfunctionfunction CSSPropertyRule() { [native code] }
Firefox68.0.0???
HeadlessChrome81.0.4044???
IE10.0.0???
Safari10.1.2???

PropertiesChromeEdgeFirefoxHeadlessChromeIESafari
CHARSET_RULE 86.0.4240 86.0.622????
FONT_FACE_RULE 86.0.4240 86.0.622????
IMPORT_RULE 86.0.4240 86.0.622????
KEYFRAMES_RULE 86.0.4240 86.0.622????
KEYFRAME_RULE 86.0.4240 86.0.622????
length 86.0.4240 86.0.622????
MEDIA_RULE 86.0.4240 86.0.622????
NAMESPACE_RULE 86.0.4240 86.0.622????
PAGE_RULE 86.0.4240 86.0.622????
prototype 86.0.4240 86.0.622????
STYLE_RULE 86.0.4240 86.0.622????
SUPPORTS_RULE 86.0.4240 86.0.622????