<!DOCTYPE html>
<style>
.scroller {
width: 300px;
height: 200px;
border: 1px solid black;
}
.sticky {
position: absolute;;
left: 0;
top: 25px;
width: 100px;
height: 100px;
background: green;
}
</style>
This tests position:sticky in non-composited (left) and composited (right) scroller.
<div class="scroller" style="position:absolute; left:50px; top:50px;">
<div class="sticky"></div>
</div>
<div class="scroller" style="position:absolute; left:450px; top:50px;">
<div class="sticky"></div>
</div>