<html>
<head>
<style>
#example {
background-color: lightgreen;
inline-size: 300px;
padding: 10px;
border-block-style: solid;
writing-mode: vertical-rl;
border-block-width: 5px;
}
</style>
</head>
<body>
<h2>border-block-width: 5px:</h2>
<div id="example">
<p>With writing-mode property value set to 'vertical-rl', the borders affected by the border-block-width property is on the left and right.</p>
</div>
</body>
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</html>