<style>
body {
margin: 0;
}
.scroller {
overflow: hidden; /* hide scrollbars */
width: 200px;
height: 500px;
outline: 2px solid black;
}
.container {
width: 200px;
height: 1000px;
}
.sticky {
position: sticky;
width: 200px;
top: 0;
}
.first {
height: 500px;
background: red;
}
.second {
height: 400px;
background: green;
}
.third {
height: 300px;
background: blue;
top: 100px;
}
.fourth {
height: 200px;
background: pink;
top: 100px;
}
.fifth {
height: 100px;
background: yellow;
}
</style>
<script>
if (window.testRunner)
testRunner.waitUntilDone();
function finishTest() {
document.querySelector('.scroller').scrollTop = 400;
if (window.testRunner)
testRunner.notifyDone();
}
window.addEventListener('load', function() {
requestAnimationFrame(function() {
requestAnimationFrame(finishTest);
});
});
</script>
<div class="scroller">
<div class="container">
<div class="first sticky">
<div class="second sticky">
<div class="third sticky">
<div class="fourth sticky">
<div class="fifth sticky"></div>
</div>
</div>
</div>
</div>
</div>
</div>