CSS :is() Selector Last Updated : 09 Jan, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The CSS :is() pseudo-class selector allows you to group multiple selectors into one, selecting elements that match any of the specified selectors.Simplifies code by reducing redundancy in selector definitions.Useful for applying styles to multiple elements with shared properties.Improves efficiency and readability in complex stylesheets.Syntax::is() HTML <!--Driver Code Starts--> <html> <head> <!--Driver Code Ends--> <style> :is(h1, h2) { color: blue; } </style> <!--Driver Code Starts--> </head> <body> <h1>Heading 1</h1> <h2>Heading 2</h2> <p>This is a paragraph.</p> </body> </html> <!--Driver Code Ends--> The :is() pseudo-class simplifies the CSS by grouping multiple selectors (h1, h2) into a single rule.All <h1>, <h2> elements are styled with a blue color, reducing redundancy in the stylesheet.More Example of CSS Styling Multiple Elements with a Single Rule HTML <!--Driver Code Starts--> <html> <head> <!--Driver Code Ends--> <style> :is(h1, h2, h3) { color: blue; } </style> <!--Driver Code Starts--> </head> <body> <h1>Heading 1</h1> <h2>Heading 2</h2> <h3>Heading 3</h3> <p>This is a paragraph.</p> </body> </html> <!--Driver Code Ends--> In this example:The :is() pseudo-class simplifies the CSS by grouping multiple selectors (h1, h2, h3) into a single rule.All <h1>, <h2>, and <h3> elements are styled with a blue color, reducing redundancy in the stylesheet. Applying Styles to Multiple Classes HTML <!--Driver Code Starts--> <html> <head> <!--Driver Code Ends--> <style> :is(.note, .alert) { background-color: lightgray; padding: 10px; border-radius: 5px; } </style> <!--Driver Code Starts--> </head> <body> <div class="note">This is a note.</div> <div class="alert">This is an alert.</div> <div class="message">This is a message.</div> </body> </html> <!--Driver Code Ends--> In this example:The :is() pseudo-class groups the .note and .alert classes, applying the same styles to both.Elements with either class receive a light gray background, padding, and rounded corners, demonstrating efficient styling of multiple classes.Best Practices for Using the CSS :is() SelectorSimplify Complex Selectors: Use :is() to group multiple selectors, reducing redundancy and enhancing readability. Be Mindful of Specificity: The :is() selector adopts the specificity of its most specific argument. Ensure this behavior aligns with your styling intentions to avoid unexpected overrides. Ensure Browser Compatibility: While :is() is supported in modern browsers, verify compatibility, especially if supporting older versions. Comment More infoAdvertise with us Next Article CSS :is() Selector M mihir0699 Follow Improve Article Tags : Web Technologies CSS HTML-Tags CSS-Properties CSS-Selectors HTML-Attributes +2 More Similar Reads CSS Selectors CSS Selectors are used to target HTML elements on your pages, allowing you to apply styles based on their ID, class, type attributes, and more. There are mainly 5 types of selectors.Basic CSS Selectors: These are used to target elements by tag, .class, or # ID for fundamental styling needs.Combinato 7 min read CSS Class Selector CSS class selectors are one of the most versatile tools in your front-end development toolkit. They allow you to apply styles to multiple elements on a webpage, ensuring your design remains consistent and easily maintainable.Syntax.class-name{ property: value;}1. Basic class selectorThe basic class 4 min read CSS :not Selector The :not(selector) selector is used to style every element that is not specified by the given selector. Known as the negation pseudo-class, it allows developers to exclude specific items from being selected.Syntax::not(selector) { //CSS Property}Usage ExamplesExample 1This example demonstrates the u 2 min read CSS :invalid Selector This :invalid selector is used to select every form elements which does not validate according to the elements. This selector works only for some form elements with limitations such as input elements with min and max attributes, email fields with a legal email, or number fields with a numeric value, 2 min read CSS :any-link Selector The :any-link selector is used to style every <a>, <area>, or <link> element that has an "href" attribute .It will skip applying CSS properties for those <a>, <area>, <href> tags in which "href" is not defined. Hence, it matches all elements that match :link or :v 2 min read Like