size-1.html
<!DOCTYPE HTML>
<html>
<body>
<canvas style="display:block" id="c" width="100" height="30000"></canvas>
<script>
var ctx = document.getElementById("c").getContext("2d");
ctx.fillStyle = "lime";
ctx.fillRect(0, 0, 100, 30000);
window.scrollTo(0, 100000);
</script>
</body>
</html>
