Unverified50% confidenceFactExact time
When child elements use grid-row: span N, if the parent does not explicitly define enough rows, Grid will automatically create implicit tracks to accommodate those elements, and the default height of implicit tracks is controlled by grid-auto-rows (defaulting to auto).
1
Sources
50%
Confidence
Long-term
Relevance
8/12/2026
First Seen
Sources
CSS Subgrid实现卡片布局完美对齐教程
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