第一代子元素和父元素，凭什么断定他们之间的父子关系
╰つ ゛思 绪 万 千 , 不 如 努 力 向 前 .ヽ
In the selector, how does the parent-child relationship come about? -PHP Chinese website Q&A-In the selector, how does the parent-child relationship come about? -PHP Chinese website Q&A
Please watch and learn.
A元素在B元素的里面，那么B元素就是父元素，A元素就是B元素的子元素 ，父子关系其实就是包含关系
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In the selector, how does the parent-child relationship come about? -PHP Chinese website Q&A-In the selector, how does the parent-child relationship come about? -PHP Chinese website Q&A
Please watch and learn.
A元素在B元素的里面，那么B元素就是父元素，A元素就是B元素的子元素 ，父子关系其实就是包含关系