<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
ul {
column-count: 2;
column-rule: dotted 1px #333;
list-style-type: none;
}
</style>
</head>
<body>
<ul>
<li>Some text</li>
<li>Some text</li>
<li>Some text</li>
<li>Some text</li>
<li>Some text</li>
<li>Some text</li>
</ul>
</body>
</html>