backdrop-filter: contrast()

示例

基本示例

使用诸如 backdrop-contrast-50 和 backdrop-contrast-100 的工具类来控制元素的背景对比度：

backdrop-contrast-50

backdrop-contrast-200

<div class="bg-[url(/img/mountains.jpg)]">
  <div class="bg-white/30 backdrop-contrast-50 ..."></div>
</div>
<div class="bg-[url(/img/mountains.jpg)]">
  <div class="bg-white/30 backdrop-contrast-200 ..."></div>
</div>

使用自定义值

Use the backdrop-contrast-[<value>] syntax to set the 背景对比度 based on a completely custom value:

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

For CSS variables, you can also use the backdrop-contrast-(<custom-property>) syntax:

<div class="backdrop-contrast-(--my-backdrop-contrast) ...">
  <!-- ... -->
</div>

This is just a shorthand for backdrop-contrast-[var(<custom-property>)] that adds the var() function for you automatically.

响应式设计

Prefix a backdrop-filter: contrast() utility with a breakpoint variant like md: to only apply the utility at medium screen sizes and above:

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

Learn more about using variants in the variants documentation.