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Backdrop Grayscale

Tailwind CSS version
v2.1+

Utilities for applying backdrop grayscale filters to an element.

Default class reference

Class
Properties
backdrop-grayscale-0--tw-backdrop-grayscale: grayscale(0);
backdrop-grayscale--tw-backdrop-grayscale: grayscale(1);

Usage

Use the backdrop-grayscale and backdrop-grayscale-0 utilities alongside the backdrop-filter utility to whether an element’s backdrop should be rendered as grayscale or in full color.

<div class="backdrop-filter backdrop-grayscale ...">
  <!-- ... -->
</div>

Responsive

To control an element’s backdrop grayscale filter at a specific breakpoint, add a {screen}: prefix to any existing backdrop grayscale utility. For example, use md:backdrop-grayscale-0 to apply the backdrop-grayscale-0 utility at only medium screen sizes and above.

<div class="backdrop-filter backdrop-grayscale md:backdrop-grayscale-0 ...">
  <!-- ... -->
</div>

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

Customizing

You can customize which backdrop-grayscale utilities are generated using the backdropGrayscale key in the theme section of your tailwind.config.js file.

  // tailwind.config.js
  module.exports = {
    theme: {
+     extend: {
+       backdropGrayscale: {
+         50: '.5',
+       }
+     }
    }
  }

Learn more about customizing the default theme in the theme customization documentation.

Variants

默认情况下, 针对 backdrop grayscale 功能类,只生成 responsive 变体。

您可以通过修改您的 tailwind.config.js 文件中的 variants 部分中的 backdropGrayscale 属性来控制为 backdrop grayscale 功能生成哪些变体。

例如,这个配置将生成 hover and focus 变体:

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

Disabling

如果您不打算在您的项目中使用 backdrop grayscale 功能,您可以通过在配置文件的 corePlugins 部分将 backdropGrayscale 属性设置为 false 来完全禁用它们:

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