<figcaption>: figure 的标题元素

<figure>
  <img
    src="/shared-assets/images/examples/elephant.jpg"
    alt="Elephant at sunset" />
  <figcaption>An elephant at sunset</figcaption>
</figure>

figure {
  border: thin silver solid;
  display: flex;
  flex-flow: column;
  padding: 5px;
  max-width: 220px;
  margin: auto;
}

img {
  max-width: 220px;
  max-height: 150px;
}

figcaption {
  background-color: #222222;
  color: white;
  font: italic smaller sans-serif;
  padding: 3px;
  text-align: center;
}