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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test Reference</title>
<head>
<style>
div {
width: 100px;
height: 200px;
writing-mode: vertical-lr;
line-height: 3em;
text-underline-offset: 1svb;
text-decoration-line: underline;
text-decoration-color: green;
text-decoration-thickness: 1svi;
}
</style>
</head>
<body>
<div id="h1">With viewport size</div>
</body>