Tailwind CSS isolate Class
The isolate utility class generates the following CSS when applied to an element.
CSS Output
.isolate {
isolation: isolate;
}Variants
Use these variant prefixes to apply isolate conditionally:
Use It
<div class="isolate">
<div class="relative z-10 bg-blue-500">Isolated stacking context</div>
<div class="relative z-20 -mt-4 bg-red-500">Stacks within parent</div>
</div>Understanding isolate
The Tailwind CSS isolate utility applies isolation: isolate; to an element when added to its class attribute. It creates a new stacking context for the element. This is essential for controlling how z-index values interact, preventing blending and z-index leaking between components.
This utility is part of Tailwind's Layout module, designed for controlling element display types, positioning methods, and document flow behavior. In Tailwind's utility-first workflow, you add isolate directly to your HTML elements rather than writing custom CSS. This approach accelerates development and keeps styles co-located with your markup, making it easy to see exactly how each element is styled at a glance.
Common responsive variants include sm:isolate, md:isolate, lg:isolate, and xl:isolate, allowing different behavior at each breakpoint. State variants like hover:isolate and focus:isolate enable interactive styling without any JavaScript. You can also combine multiple variants for fine-grained control over when the utility applies.
This class works well alongside `isolation-auto`, `relative`, `opacity-50` to build complete, production-ready interfaces. Tailwind's tree-shaking ensures only utilities you actually use appear in your final CSS bundle, keeping file sizes minimal. Browser support for the underlying CSS is excellent across Chrome, Firefox, Safari, and Edge.
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