背景对比

​基本用法

¥Basic usage

​控制背景对比度

¥Controlling backdrop contrast

使用 backdrop-contrast-* 工具来控制元素的背景对比度。

¥Use the backdrop-contrast-* utilities to control an element’s backdrop contrast.

backdrop-contrast-50

backdrop-contrast-125

backdrop-contrast-200

<div class="backdrop-contrast-50 bg-white/30 ...">
  <!-- ... -->
</div>
<div class="backdrop-contrast-125 bg-white/30 ...">
  <!-- ... -->
</div>
<div class="backdrop-contrast-200 bg-white/30 ...">
  <!-- ... -->
</div>

​删除背景过滤

¥Removing backdrop filters

To remove all of the backdrop filters on an element at once, use the backdrop-filter-none utility:

<div class="backdrop-blur-md backdrop-contrast-125 md:backdrop-filter-none">
  <!-- ... -->
</div>

This can be useful when you want to remove backdrop filters conditionally, such as on hover or at a particular breakpoint.

​有条件地应用

​悬停、聚焦和其他状态

Tailwind lets you conditionally apply utility classes in different states using variant modifiers. For example, use hover:backdrop-contrast-150 to only apply the backdrop-contrast-150 utility on hover.

<div class="backdrop-contrast-125 hover:backdrop-contrast-150">
  <!-- ... -->
</div>

For a complete list of all available state modifiers, check out the Hover, Focus, & Other States documentation.

​断点和媒体查询

You can also use variant modifiers to target media queries like responsive breakpoints, dark mode, prefers-reduced-motion, and more. For example, use md:backdrop-contrast-150 to apply the backdrop-contrast-150 utility at only medium screen sizes and above.

<div class="backdrop-contrast-125 md:backdrop-contrast-150">
  <!-- ... -->
</div>

To learn more, check out the documentation on Responsive Design, Dark Mode and other media query modifiers.

​使用自定义值

¥Using custom values

​自定义主题

¥Customizing your theme

默认情况下，Tailwind 包含一些通用 backdrop-contrast 工具。你可以通过编辑 tailwind.config.js 文件中的 theme.backdropContrast 或 theme.extend.backdropContrast 来自定义这些值。

¥By default, Tailwind includes a handful of general purpose backdrop-contrast utilities. You can customize these values by editing theme.backdropContrast or theme.extend.backdropContrast in your tailwind.config.js file.

module.exports = {
  theme: {
    extend: {
      backdropContrast: {
        25: '.25',
      }
    }
  }
}

在 主题定制 文档中了解有关自定义默认主题的更多信息。

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

​任意值

¥Arbitrary values

If you need to use a one-off backdrop-contrast value that doesn’t make sense to include in your theme, use square brackets to generate a property on the fly using any arbitrary value.

<div class="backdrop-contrast-[.25]">
  <!-- ... -->
</div>

Learn more about arbitrary value support in the arbitrary values documentation.