CSS3的有什么区别：root伪类和html？ [英] What's the difference between CSS3's :root pseudo class and html?

问题描述

似乎找不到这方面的更多信息。

Smashing Magazine 似乎基本上说 html 和：root

解决方案

从 W3C wiki ：

：root 伪类表示作为文档根目录的元素。在HTML中，这始终是HTML元素。

CSS是一种通用的样式语言，可以用于其他文档类型，而不仅仅是HTML等SVG。 / p>



从规格（强调我的）：

此规范定义级联样式表，级别2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）。




Can't seem to find much information about this.

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

解决方案

From the W3C wiki:

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

CSS is a general purpose styling language that it can be used with other document types, not only with HTML, such as SVG.

From the specification (emphasis mine):

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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