CSS3 的 :root 伪类和 html 有什么区别?

2022-01-10 00:00:00 css-selectors css pseudo-class

我似乎找不到太多关于此的信息.

I can't seem to find much information about this.

Smashing Magazine 似乎是说 html 和 :root 是同一个东西，但肯定有细微的差别吗?

Smashing Magazine seems to be saying that html and :root are the same thing but surely there must be a tiny difference?

推荐答案

来自 W3C 维基:

:root 伪类表示一个元素，它是文档的根.在 HTML 中，这始终是 HTML 元素.

The :root pseudo-class represents an element that is the root of the document. In HTML, this is always the HTML element.

CSS 是一种通用的样式语言.它可以与其他文档类型一起使用，不仅可以与 HTML 一起使用，还可以与 SVG 一起使用.

CSS is a general purpose styling language. It can be used with other document types, not only with HTML, it can be used with SVG for example.

来自规范(强调我的):

本规范定义了层叠样式表，第 2 级修订版 1 (CSS 2.1).CSS 2.1 是一种样式表语言，允许作者和用户将样式(例如字体和间距)附加到结构化文档(例如 HTML 文档和 XML 应用程序).

This specification defines Cascading Style Sheets, level 2 revision 1 (CSS 2.1). CSS 2.1 is a style sheet language that allows authors and users to attach style (e.g., fonts and spacing) to structured documents (e.g., HTML documents and XML applications).

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