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Test Info:

<!DOCTYPE html>
<title>Performance Paint Timing Test: FCP due to transform-based intersection with document</title>
#main {
width: 100px;
height: 100px;
left: 0px;
transform: translate(-1000px);
position: relative;
top: 0;
background-image: url(../resources/circles.png);
/* contentful class is defined in test_fcp script. */
#main.contentful {
transform: none;
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<div id="main"></div>
test_fcp("First contentful paint fires due to transform-based intersection with document.")