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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<!-- NOTE: This bug was triggered by scrollbar opacity-fading, so this
testcase needs to be loaded with this pref...
layout.testing.overlay-scrollbars.always-visible
...set to *false* in order to have a chance to trigger the bug.
We don't have to worry about this producing any screenshots of
unpredictable partially-faded-scrollbars in our reftest snapshot,
because our scrollbars don't actually paint here, since the
scrollable element has "overflow:auto" and doesn't overflow
(because it's auto-sized to fit its content). -->
<style>
.container {
display: flex;
overflow-y: auto;
border: 1px solid black;
}
</style>
<script type='text/javascript'>
window.addEventListener("MozReftestInvalidate", startTest);
function startTest() {
// NOTE: setTimeout in tests is evil, but it's necessary here -- we need
// to wait until the scrollbars have finished fading, and there's no
// event we can listen for to signal that, AFAIK. Fortunately, there
// shouldn't be *visible* scrollbars in this testcase, so even if our
// setTimeout fires too early/late, the test will still pass. (So, there
// shouldn't be spurious failures; any failures that happen will be real.)
setTimeout(endTest, 800);
}
function endTest() {
document.documentElement.removeAttribute("class");
}
</script>
</head>
<body>
<div class="container">
<div>T</div>
</div>
</body>
</html>
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