blob: 9c17ca1ab17db26eede5f76339a0766cc1db3437 [file] [log] [blame]
<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
<style>
.scroller {
position: absolute;
z-index: 0;
margin: 20px;
width: 300px;
height: 300px;
border: 1px solid black;
overflow: hidden;
}
.scroller.scrollable {
overflow-y: scroll;
}
.contents {
height: 2000px;
}
.negative {
position: absolute;
top: 0;
left: 0;
z-index: -1;
padding: 20px;
background-color: gray;
}
.box {
width: 200px;
height: 200px;
}
.composited {
width: 20px;
height: 20px;
transform: translateZ(0);
background-color: silver;
}
</style>
<script>
if (window.testRunner)
testRunner.waitUntilDone();
window.addEventListener('load', () => {
setTimeout(() => {
document.getElementById('target').classList.add('scrollable');
if (window.testRunner)
testRunner.notifyDone();
}, 0);
}, false);
</script>
</head>
<body>
<div id="target" class="scroller">
<div class="negative"></div>
<div class="contents">
<div class="composited box"></div>
<div class="box" style="background-color: green"></div>
</div>
</div>
</body>
</html>