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<!doctype html>
<title>CSS Selectors nested invalidation on changed parent</title>
<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.b {
color: red;
}
.a {
& .b {
color: green;
}
}
</style>
<div id="container">
<div id="child" class="b">
Test passes if color is green.
</div>
</div>
<script>
test(() => {
let container = document.getElementById('container');
let child = document.getElementById('child');
assert_equals(getComputedStyle(child).color, 'rgb(255, 0, 0)');
container.classList.add('a');
assert_equals(getComputedStyle(child).color, 'rgb(0, 128, 0)');
});
</script>
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