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<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: auto name generated from ID</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
<link rel="match" href="auto-name-ref.html">
<script src="/common/reftest-wait.js"></script>
<style>
div {
width: 100px;
height: 100px;
}
main {
display: flex;
flex-direction: column;
}
.item {
view-transition-name: auto;
view-transition-class: item;
}
main.switch #item1 {
order: 2;
}
#item1 {
background: green;
}
#item2 {
background: yellow;
position: relative;
left: 100px;
}
html::view-transition {
background: rebeccapurple;
}
:root { view-transition-name: none; }
html::view-transition-group(*.item) {
animation-timing-function: steps(2, start);
animation-play-state: paused;
}
html::view-transition-old(*),
html::view-transition-new(*)
{ animation-play-state: paused; }
html::view-transition-old(*) { animation: unset; opacity: 0 }
html::view-transition-new(*) { animation: unset; opacity: 1 }
</style>
<main id=main>
<div class="item" id="item1"></div>
<div class="item" id="item2"></div>
</main>
<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");
function runTest() {
document.startViewTransition(() => {
main.classList.toggle("switch");
let div1 = document.createElement("div");
div1.classList.add("item");
div1.id = "item1";
let div2 = document.createElement("div");
div2.classList.add("item");
div2.id = "item2";
main.replaceChildren(div1, div2);
}).ready.then(takeScreenshot);
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>
</body>
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