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<!DOCTYPE html>
<title>:is() combined with pseudo-classes</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#matches">
<link rel="help" href="https://drafts.csswg.org/selectors/#useraction-pseudos">
<style>
button {
color: black;
}
/* Selects #a, #c */
:is(main :where(main #a), #c:nth-child(odd), #d):is(:enabled) {
color: green;
}
/* Selects #b, #d, #f */
button:is(:nth-child(even), span #e):is(:enabled, :where(:disabled)) {
color: blue;
}
</style>
<main>
<button id=a>A</button>
<button id=b>B</button>
<button id=c>C</button>
<button id=d disabled>D</button>
<button id=e disabled>E</button>
<button id=f disabled>F</button>
</main>
<script>
test(function() {
assert_equals(getComputedStyle(a).color, 'rgb(0, 128, 0)');
assert_equals(getComputedStyle(b).color, 'rgb(0, 0, 255)');
assert_equals(getComputedStyle(c).color, 'rgb(0, 128, 0)');
assert_equals(getComputedStyle(d).color, 'rgb(0, 0, 255)');
assert_equals(getComputedStyle(e).color, 'rgb(0, 0, 0)');
assert_equals(getComputedStyle(f).color, 'rgb(0, 0, 255)');
}, ':is() combined with pseudo-classes');
</script>
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