Unverified50% confidenceFactExact time
弹窗被触发显示时元素会被提升至浏览器的Top Layer顶层，独立于文档流和z-index堆叠上下文
1
Sources
50%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
HTML Native Popover Attribute: Zero JavaScript Popover Interactions
youtubeKevin Powell7/9/2026
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