Cobalah sendiri - CSS Reference list-style-image

<!DOCTYPE html>
<html>
<head>
<style>
ul {
   list-style-image: url('sqpurple.gif');
}
</style>
</head>
<body>

<ul>
  <li>Coffee</li>
  <li>Tea</li>
  <li>Coca Cola</li>
</ul>

</body>
</html>