如何使用<ul> list而不是<select> dropdown为每个选项添加图像？

<ul class="image-list">
  <li><a href="#"><span class="image" style="background-image: url('image1.jpg');"></span>选项1</a></li>
  <li><a href="#"><span class="image" style="background-image: url('image2.jpg');"></span>选项2</a></li>
  <li><a href="#"><span class="image" style="background-image: url('image3.jpg');"></span>选项3</a></li>
</ul>

.image-list li {
  list-style-type: none;
}

.image-list li a {
  display: block;
  padding: 10px;
  text-decoration: none;
}

.image {
  display: inline-block;
  width: 20px;
  height: 20px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin-right: 10px;
}