


How Can I Style a Parent Element Based on its Child Elements Using CSS?
Nov 24, 2024 am 06:08 AMApply Style to Parent if it Has Child Using CSS
As a web developer, you may encounter situations where you need to apply styles to a parent element based on the presence of specific child elements. While this may seem like a straightforward task, achieving it solely with CSS can be a challenge.
Fortunately, CSS provides selectors that can help you achieve this:
has() Selector:
The has() selector allows you to select an element that contains a specific child element. For example, to apply a style to a parent <li> element if it has a child <ul> element with the class "sub," you can use the following CSS:
ul li:has(ul.sub) { /* Your styles here */ }
Example:
Consider the following HTML structure:
<ul class="main"> <li>Item 1</li> <li>Item 2</li> <li> Item 3 <ul class="sub"> <li>Sub Item 1</li> <li>Sub Item 2</li> <li>Sub Item 3</li> </ul> </li> <li>Item 4</li> <li>Item 5</li> </ul>
Using the has() selector, you can apply a blue background to all <li> elements under the <ul> with the class "main" that have child <ul> elements with the class "sub":
ul.main li:has(ul.sub) { background-color: blue; }
Note: The has() selector is not supported by all browsers. If you need broader browser support, you may consider using a JavaScript solution instead.
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