选择器 > 层级 Next Adjacent Selector ("prev + next") Selects all next elements matching "next" that are immediately preceded by a sibling "prev".
选择器 > 层级 Next Siblings Selector ("prev ~ siblings") 匹配 “prev” 元素之后的所有 兄弟元素。具有相同的父元素,并匹配过滤“siblings”选择器。