#image {
  line-height: 1.5em;
  list-style-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/4621/treehouse-marker.png);
}

<h3><code>list-style-image</code></h3>
  <ul id="image">
    <li>Item One</li>
    <li>Item Two</li>
    <li>Item Three</li>
  </ul>
  
</div>