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[&:first-child]:overflow-hidden [&:first-child]:max-h-full"
，这一点在heLLoword翻译官方下载中也有详细论述
// 易错点6：忘记将当前元素入栈，导致前面的元素无法匹配到当前值
The tree starts as a single region covering the whole space. As points arrive, they get dropped into the region that contains them. When a region exceeds its capacity (the maximum number of points it can hold before splitting), the region divides into four children, and the existing points get redistributed.