重置
横排
竖排
/
mdn2
/
en-US
/
docs
/
Web
/
API
/
CSSStyleSheet
CSSStyleSheet
addRule
cssRules
CSSStyleSheet
deleteRule
insertRule
ownerRule
removeRule
replace
replaceSync
rules
/
addRule
cssRules
CSSStyleSheet
deleteRule
insertRule
ownerRule
removeRule
replace
replaceSync
rules