<!DOCTYPE HTML> <html reftest-async-scroll> <div style="overflow:scroll; height: 400px; width: 400px" reftest-displayport-x="0" reftest-displayport-y="0" reftest-displayport-w="400" reftest-displayport-h="890" reftest-async-scroll-x="0" reftest-async-scroll-y="120"> <div style="transform: translateY(90px); margin-top: 10px; background-color: yellow; height: 400px"> <div style="position:sticky; top: 0px; height: 20px; background-color: green"></div> </div> <div style="height: 400px">spacer</div> </div>