HTML着重元素()标记出需要用户着重阅读的内容,元素是可以嵌套的,嵌套层次越深,则其包含的内容被认定为越需要着重阅读。
浏览器支持
示例
元素通常被用于指示一个隐式或显式的对比。
in html 5, what was previously called block-level content is now called flow content.

结果
in html 5, what was previously called block-level content is now called flow content.