Hakim El Hattab 939af263ce fall back on js centering when flexbox is not supported 11 年之前
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print f0f48bd9b0 use flexbox for vertically centered printing #862 11 年之前
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reveal.css 939af263ce fall back on js centering when flexbox is not supported 11 年之前
reveal.min.css 939af263ce fall back on js centering when flexbox is not supported 11 年之前