CSS :root Pseudo-class - W3Schools
The CSS :root pseudo-class matches the document's root element. In HTML, the root element is always the <html> element.
:root - CSS: Cascading Style Sheets | MDN - MDN Web Docs
2025年2月12日 · The :root CSS pseudo-class matches the root element of a tree representing the document. In HTML, :root represents the <html> element and is identical to the selector html, except that its specificity is higher.
HTML Elements - W3Schools
The <html> element is the root element and it defines the whole HTML document. It has a start tag <html> and an end tag </html> . Then, inside the <html> element there is a <body> element:
<html>: The HTML Document / Root element - MDN Web Docs
2025年3月6日 · The HTML element represents the root (top-level element) of an HTML document, so it is also referred to as the root element. All other elements must be descendants of this element. There can be only one <html> element in a document.
What is the css / html `root` element? - Stack Overflow
2010年10月12日 · In the overwhelming majority of cases you’re likely to encounter, :root refers to the <html> element in a webpage. In an HTML document the html element will always be the highest-level parent, so the behaviour of :root is predictable.
What's the difference between CSS3's :root pseudo class and html?
2013年4月9日 · For HTML documents, there is no difference - your root element is the <html> tag, so html{} and :root{} are (besides from a difference in specificity) semantically equivalent. However, you can apply CSS not only to HTML, but all XML-like documents.
HTML <html> Tag - W3Schools
The <html> tag represents the root of an HTML document. The <html> tag is the container for all other HTML elements (except for the <!DOCTYPE> tag). Note: You should always include the lang attribute inside the <html> tag, to declare the language of the Web page.
HTML root folder? - Stack Overflow
2013年4月10日 · In general using an absolute path with / is probably prefereable, but <base> may be useful if you have the "root" of your page not on the root of the domain. I.E. example.com/mysite/index.html vs. example.com/index.html. https://developer.mozilla.org/en-US/docs/HTML/Element/base
How to define the root of an HTML document - GeeksforGeeks
2020年12月23日 · The <html> tag in HTML is used to define the root of HTML and XHTML documents. The <html> tag tells the browser that it is an HTML document. It is the second outer container for everything that appears in an HTML document followed by the <!DOCTYPE> tag.
What is the Root Element of the HTML DOM? - GeeksforGeeks
2024年2月20日 · The root element of the Document Object Model (DOM) is the <html> element. It represents the root of the HTML document tree and encapsulates all other elements within the document. The DOM tree is a hierarchical representation of the structure of an HTML document, with the <html> element serving as the highest level or starting point. Key Points:
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