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/* :where() — zero specificity, easy to override */ :where(h1, h2, h3) { margin-top: 1.5rem; } /* :is() — specificity of #main (1,0,0) */ :is(#main, article) p { font-size: 1.1rem; } /* :not() — specificity of its argument */ a:not(.btn) { text-decoration: underline; }
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