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CSS :root selector

CSS :root selector

This CSS pseudo-class matches any document’s root element. It chooses the parent of the highest-level inside the document DOM or tree.

An element of <html> is always a root element in HTML. But the :root selector is similar to the html selector. It is because both the elements target the same element, although the selector :root includes the higher specificity.

Syntax:

:root {  
    // CSS property  
}  

Example:

<!DOCTYPE html>
<html>
<head>
<title> :root selector </title>
<style>
:root
{
 background: yellow;
 color: red;
 text-align: center;
}
</style>
</head>
<body>
<h1> Welcome to this Page </h1>
<h2> The :root selector is specified in this example. </h2>
</body>
</html>

Output:

CSS :root selector

Let’s try another method in which :root selector or html selector will implement simultaneously. If both these selector will implement within the specificity matter, the :root selector will win.

In the following example, we are using similar properties in both the selectors, i.e., :root selector and html selector. The :root selector properties will execute due to the higher specificity. Although a few properties are defined in the html selector but not in the :root selector, the html selector’s properties will work.

Example:

<!DOCTYPE html>
<html>
<head>
<title> :root selector </title>
<style>
:root
{
 background: violet;
 color: purple;
 text-align: center;
}
html
{
 background: yellow;
 color: red;
 font-size: 30px;
}
</style>
</head>
<body>
<h1> Welcome to this Page </h1>
<h2> The html selector and :root selector is specified in this example. </h2>
</body>
</html>

As we can define in the above illustration that the color and background-color properties both are defined in :root selector and also in the html selector. Although in the result, the :root selector properties will execute, due to the :root selector’s higher specificity.

Output:

CSS :root selector



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