:optional
摘要
语法
Error: could not find syntax for this item
例子
查看:invalid
示例。
规范
Specification |
---|
HTML Standard # selector-optional |
Selectors Level 4 # opt-pseudos |
浏览器兼容性
BCD tables only load in the browser
查看:invalid
示例。
Specification |
---|
HTML Standard # selector-optional |
Selectors Level 4 # opt-pseudos |
BCD tables only load in the browser