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<!doctype HTML>
<meta charset="utf8">
<title>Content Visibility: tab order navigation ignores hidden subtrees</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<meta name="assert" content="tab order navigation ignores hidden subtrees.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
.hidden {
content-visibility: hidden;
}
</style>
<input id=one type=text></input>
<div class=hidden>
<input id=two type=text></input>
<input id=three type=text></input>
<input id=four type=text></input>
</div>
<input id=five type=text></input>
<script>
async_test((t) => {
const tab = "\uE004";
async function runTest() {
await test_driver.send_keys(document.body, tab);
t.step(() => {
assert_equals(document.activeElement, document.getElementById("one"));
});
await test_driver.send_keys(document.body, tab);
t.step(() => {
assert_equals(document.activeElement, document.getElementById("five"));
});
t.done();
}
window.onload = () => { requestAnimationFrame(runTest); };
}, "Tab order navigation skips hidden subtrees");
</script>
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