投影

​基本用法

¥Basic usage

​添加阴影

¥Adding a drop shadow

使用 drop-shadow-* 工具向元素添加阴影。

¥Use the drop-shadow-* utilities to add a drop shadow to an element.

<div class="drop-shadow-md ...">
  <!-- ... -->
</div>
<div class="drop-shadow-lg ...">
  <!-- ... -->
</div>
<div class="drop-shadow-xl ...">
  <!-- ... -->
</div>
<div class="drop-shadow-2xl ...">
  <!-- ... -->
</div>

这对于将阴影应用于不规则形状（例如文本和 SVG 元素）非常有用。要将阴影应用于常规元素，你可能需要使用 框影。

¥This is useful for applying shadows to irregular shapes, like text and SVG elements. For applying shadows to regular elements, you probably want to use box shadow instead.

​删除过滤

¥Removing filters

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

<div class="blur-md invert drop-shadow-xl md:filter-none">
  <!-- ... -->
</div>

This can be useful when you want to remove 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:drop-shadow-xl to only apply the drop-shadow-xl utility on hover.

<div class="drop-shadow-md hover:drop-shadow-xl">
  <!-- ... -->
</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:drop-shadow-xl to apply the drop-shadow-xl utility at only medium screen sizes and above.

<div class="drop-shadow-md md:drop-shadow-xl">
  <!-- ... -->
</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 dropShadow 工具。你可以通过编辑 tailwind.config.js 文件中的 theme.dropShadow 或 theme.extend.dropShadow 来自定义这些值。

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

module.exports = {
  theme: {
    extend: {
      dropShadow: {
        '3xl': '0 35px 35px rgba(0, 0, 0, 0.25)',
        '4xl': [
            '0 35px 35px rgba(0, 0, 0, 0.25)',
            '0 45px 65px rgba(0, 0, 0, 0.15)'
        ]
      }
    }
  }
}

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 drop-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.

<div class="drop-shadow-[0_35px_35px_rgba(0,0,0,0.25)]">
  <!-- ... -->
</div>

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