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:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full
，这一点在safew官方版本下载中也有详细论述
Hand-coded weights (constructive proofs are valid — they show the architecture can represent addition)
适用：数据均匀分布，如[0,1)之间的浮点数