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<!DOCTYPE html>
<title>@scope - inner @layer</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule">
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#layering">
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#scope-scope">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
@scope (.a) {
/* The theme layer wins over the base layer. Note that @layer statements
are allowed here, but aren't affected by the enclosing @scope. */
@layer base, theme;
@layer theme {
:scope {
z-index: 1;
}
.b {
background-color: green;
}
}
}
@layer base {
.a {
z-index: 0;
}
.a .b {
background-color: red;
}
}
</style>
<main>
<div class=a>
<div class=b>
</div>
</div>
<div class=b></div>
</main>
<script>
test(() => {
let a = document.querySelector('main > .a');
let b = document.querySelector('main > .a > .b');
assert_equals(getComputedStyle(a).zIndex, '1');
assert_equals(getComputedStyle(b).backgroundColor, 'rgb(0, 128, 0)');
let out_of_scope_b = document.querySelector('main > .b');
assert_equals(getComputedStyle(out_of_scope_b).backgroundColor, 'rgba(0, 0, 0, 0)');
}, 'Style rules within @layer are scoped');
</script>
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