The :root selector in CSS serves as a key pseudo-class targeting a document's root element, which is the <html> tag in HTML. It is primarily used to establish global CSS variables, allowing developers to maintain a consistent and manageable style across a website. By centralizing variable definitions in :root, developers can easily modify style attributes like colors and font sizes in one place, leading to improved readability and maintainability. This feature also supports responsive design via media queries, although compatibility with older browsers like Internet Explorer should be considered.
:root is a CSS pseudo-class that targets the document's root element, enabling centralized management of global variables for style consistency across the stylesheet.
Defining CSS variables in :root allows developers to easily update styles by changing a single value, enhancing maintainability and readability of the code.
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