盒阴影颜色

​基本用法

¥Basic usage

​设置盒阴影颜色

¥Setting the box shadow color

使用 shadow-* 工具更改现有框阴影的颜色。默认情况下，彩色阴影的透明度为 100%，但你可以使用透明度修饰符对其进行调整。

¥Use the shadow-* utilities to change the color of an existing box shadow. By default colored shadows have an opacity of 100%, but you can adjust this using the opacity modifier.

<button class="bg-cyan-500 shadow-lg shadow-cyan-500/50 ...">Subscribe</button>
<button class="bg-blue-500 shadow-lg shadow-blue-500/50 ...">Subscribe</button>
<button class="bg-indigo-500 shadow-lg shadow-indigo-500/50 ...">Subscribe</button>

​在彩色背景上使用阴影

¥Using shadows on colored backgrounds

在彩色背景上使用阴影时，彩色阴影通常比默认的黑色阴影看起来更自然，后者往往渲染灰色和褪色。

¥When using shadows on a colored background, colored shadows can often look more natural than the default black-based shadows, which tend to appear gray and washed-out.

<!-- Default shadow-->
<button class="shadow-lg">Subscribe</button>

<!-- Colored shadow-->
<button class="shadow-lg shadow-indigo-500/40 ...">Subscribe</button>

​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:shadow-indigo-500/40 to only apply the shadow-indigo-500/40 utility on hover.

<button class="shadow shadow-blue-500/40 hover:shadow-indigo-500/40">
  <!-- ... -->
</button>

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:shadow-indigo-500/40 to apply the shadow-indigo-500/40 utility at only medium screen sizes and above.

<button class="shadow shadow-blue-500/40 md:shadow-indigo-500/40">
  <!-- ... -->
</button>

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

​更改阴影大小时保留阴影颜色

¥Preserving shadow color when changing the shadow size

请注意，如果你在不同的断点或悬停等其他状态更改 框影 大小，它将覆盖任何现有的阴影颜色。

¥Note that if you change the box shadow size at a different breakpoint, or on another state like hover, it will override any existing shadow colors.

<!-- This shadow will NOT be red at medium screens and above -->
<div class="shadow-lg shadow-red-500 md:shadow-xl"></div>

要在这些状态下保留阴影颜色，需要重新指定：

¥To preserve the shadow color in these states, it needs to be respecified:

<!-- This shadow WILL be red at medium screens and above -->
<div class="shadow-lg shadow-red-500 md:shadow-xl md:shadow-red-500"></div>

Tailwind 必须以这种方式工作，否则将无法切换回默认阴影。

¥It’s necessary for Tailwind to work this way, as otherwise there would be no way to switch back to the default shadow.

​使用自定义值

¥Using custom values

​自定义主题

¥Customizing your theme

By default, Tailwind makes the entire default color palette available as box shadow colors. You can customize your color palette by editing theme.colors or theme.extend.colors in your tailwind.config.js file.

module.exports = {
  theme: {
    extend: {
      colors: {
        'regal-blue': '#243c5a',
      },
    }
  }
}

Alternatively, you can customize just your box shadow colors by editing theme.boxShadowColor or theme.extend.boxShadowColor in your tailwind.config.js file.

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 box-shadow 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.

<button class="shadow-[#50d71e]">
  <!-- ... -->
</button>

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