<figure> 标签用于对元素进行组合。使用 <figcaption> 元素为元素组添加标题。 HTML5: <figure><figcaption>PRC</figcaption><p>The People's Republic of China was born in 1949...</p></figure> HTML4: <dl><h1>PRC</h1><p>The People's Republic of China was born in 1949...</p></dl>
<summary> 标签包含 details 元素的标题,”details” 元素用于描述有关文档或文档片段的详细信息。”summary” 元素应该是 “details” 元素的第一个子元素。 HTML5: <details><summary>HTML 5</summary>This document teaches you everything you have to learn about HTML 5.</details> HTML4: none