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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Display: reading-order-items with value grid-order</title>
<link rel="help" href="https://drafts.csswg.org/css-display-4/#reading-order-items">
<link rel="author" title="Di Zhang" href="mailto:dizhangg@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src='../../resources/shadow-dom.js'></script>
<script src="../../resources/focus-utils.js"></script>
<style>
.wrapper {
display: grid;
reading-order-items: grid-order;
}
.popover {
inset:auto;
top:200px;
left:200px;
}
</style>
<div class="wrapper">
<button id=a style="order: 4">A</button>
<button id=invoker style="order: 2" popovertarget=P>Invoker</button>
<button id=c style="order: 1">C</button>
</div>
<div popover id=P class="popover">
<button id=b1 style="order: 3">Popover button B1</button>
<button id=b2 style="order: 1">Popover button B2</button>
<button id=b3 style="order: 2">Popover button B3</button>
</div>
<script>
document.querySelector('[popovertarget]').click();
promise_test(async () => {
let elements = [
'c',
'invoker',
'b1',
'b2',
'b3',
'a',
];
await assert_focus_navigation_forward(elements);
}, `Popover in reading-order-items: grid-order container.`);
promise_test(async () => {
P.classList.add("wrapper");
let elements = [
'c',
'invoker',
'b2',
'b3',
'b1',
'a',
];
await assert_focus_navigation_forward(elements);
}, `Popover in container and itself with reading-order-items: grid-order.`);
</script>
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