<!DOCTYPE html>
<html class="reftest-wait">
<head>
    <title>View Transitions: No white flash should be visible during the duration of the update callback</title>
    <link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/#ref-for-captured-in-a-view-transition">
    <link rel="match" href="no-white-flash-before-activation-ref.html">
    <style>
        body {
            margin: 0;
        }
        div {
            width: 100vw;
            height: 100vh;
            background-color: #00