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Test Info:
<!DOCTYPE html>
<script>
function scroll() {
document.getElementsByTagName("div")[0].scrollTop = 200;
}
</script>
<body onload="scroll()">
<div style="writing-mode: vertical-lr;
height: 300px;
font-size: 0;
line-height: 0;
border: 1px solid gray;
overflow: scroll;">
<div style="height: 100%;
width: 100px;
border: 50px solid blue;">