<!DOCTYPE html>
<style>
  li { list-style-image: url('data:image/svg+xml, \
    <svg width="30px" height="1px" xmlns="http://www.w3.org/2000/svg"> \
      <line x2="30" stroke-width="2" stroke="black"/> \
    </svg>');
  }
</style>
<ul>
  <li>Bullet 1</li>
  <li>Bullet 2</li>
</ul>