There’s a tool in CSS that you might not have heard of yet. It’s powerful. It’s been there for a while. And it’ll likely become one of your favorite new things about CSS. Behold, the @supports rule. Also known as Feature Queries. With @supports, you can write a small test in your CSS to see whether or not a particular “feature” (CSS property or value) is supported, and apply a block of code (or no
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