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chromium/third_party/blink/web_tests/external/wpt/css/css-overflow/overflow-clip-margin-012.html 

<!doctype html>
<html class="reftest">
<meta charset="utf-8">
<title>Overflow: visible + overflow-clip-margin is shown with content-visibility: auto</title>
<link rel="help" href="https://www.w3.org/TR/css-overflow-3/#propdef-overflow-clip-margin">
<link rel="match" href="overflow-clip-margin-007-ref.html">
<style>
    body {
        height: 15000px;
    }

    .auto {
        content-visibility: auto;
        width: 100px;
        height: 100px;
        overflow-clip-margin: 10000px;
        overflow: visible;
        background: lightblue;
    }

    .big {
        width: 10px;
        height: 20000px;
        position: relative;
        top: -10000px;
        background: green;
    }
</style>
<div class=auto>
    <div class=big></div>
</div>
<script>
    onload = function () {
        document.documentElement.scrollTop = window.innerHeight * 3;
    }
</script>