Sergius182,
вариант
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
ul{
counter-reset: headings 0;
list-style: none;
}
li:before{
counter-increment: headings 1;
content: "\2B55 "counter(headings)". ";
}
li{
text-decoration: none;
}
</style>
</head>
<body>
<ul>
<li>первое</li>
<li>второе</li>
<li>третее</li>
</ul>
</body>
</html>