CSS将href标题放置在UL列表中的图像下

<ul>
  <li>
    <img src="image.jpg" alt="图像">
    <a href="#" class="title">标题</a>
  </li>
</ul>

ul li {
  position: relative;
}

ul li .title {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  color: #fff;
  padding: 5px;
  text-align: center;
}

ul li .title::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid rgba(0, 0, 0, 0.5);
}