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<!DOCTYPE html>
<title>CSS Container Queries Test: registered color syntax style queries</title>
<link rel="help" href="https://drafts.csswg.org/css-contain-3/#style-container">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
@property --reg-color {
syntax: "<color>";
inherits: false;
initial-value: red;
}
#light { color-scheme: light; }
#dark { color-scheme: dark; }
.container { --reg-color: light-dark(white, black); }
@container style(--reg-color: white) {
#t1 { color: green; }
}
@container style(--reg-color: black) {
#t2 { color: green; }
}
</style>
<div id="light" class="container">
<div id="t1"></div>
</div>
<div id="dark" class="container">
<div id="t2"></div>
</div>
<script>
const green = "rgb(0, 128, 0)";
test(() => {
assert_equals(getComputedStyle(t1).color, green);
}, "Registered color with light color-scheme and light-dark()");
test(() => {
assert_equals(getComputedStyle(t2).color, green);
}, "Registered color with dark color-scheme and light-dark()");
</script>
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