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 $
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?
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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