HTML 标签：sup

等等！这难道不是一种排版约定，而且从定义上来说就是表现性的吗？表现难道不应该由 CSS 来处理吗？没错，就是这样！

sub 和 sup 是 HTML5 规范中最令人憎恶的标签。请蔑视它们。它们是标记语言中的“迷地原虫”。

可选属性

全局属性

示例

<p>A blind <u>loin</u> (<i>Panthera leo</i>) asked what the 2 in E=MC<sup>2</sup> and H<sub>2</sub>O meant.</p>
<p>She went on to ask if it was supposed to be <b>emphasized</b> in some way.</p>
<p>She reached the conclusion that this HTML is, in fact, <s>presentational, rather than</s> meaningful.</p>
<p>Disclaimer: <small>Most of this page, on most levels, it mostly nonsense.</small></p>