Non-standard であることに注意すべき Non-standard This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future. https://developer.mozilla.org/en-US/docs/Web/CSS/font-smooth MDNにもこう記載があるとおり、正式な仕様策定のトラックからは外れています。 影響範囲や、ブラ
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