You're looking at the documentation for Tailwind CSS v2.
Tailwind CSS on GitHub

Isolation

Tailwind CSS version
v2.1+

Utilities for controlling whether an element should explicitly create a new stacking context.

Default class reference

Class
Properties
isolateisolation: isolate;
isolation-autoisolation: auto;

Usage

Use the isolate and isolation-auto utilities to control whether an element should explicitly create a new stacking context.

<div class="isolate ...">
  <!-- ... -->
</div>

Responsive

To control the isolation property at a specific breakpoint, add a {screen}: prefix to any existing isolation utility. For example, use md:isolation-auto to apply the isolation-auto utility at only medium screen sizes and above.

<div class="isolate md:isolation-auto ...">
  <!-- ... -->
</div>

For more information about Tailwind’s responsive design features, check out the Responsive Design documentation.

Customizing

Variants

By default, only responsive variants are generated for isolation utilities.

You can control which variants are generated for the isolation utilities by modifying the isolation property in the variants section of your tailwind.config.js file.

For example, this config will also generate hover and focus variants:

  // tailwind.config.js
  module.exports = {
    variants: {
      extend: {
        // ...
+       isolation: ['hover', 'focus'],
      }
    }
  }

Disabling

If you don't plan to use the isolation utilities in your project, you can disable them entirely by setting the isolation property to false in the corePlugins section of your config file:

  // tailwind.config.js
  module.exports = {
    corePlugins: {
      // ...
+     isolation: false,
    }
  }