滤镜
backdrop-filter: contrast()
用于为元素应用背景对比度滤镜的工具类。
| Class | Styles |
|---|---|
backdrop-contrast-<number> | backdrop-filter: contrast(<number>%); |
backdrop-contrast-(<custom-property>) | backdrop-filter: contrast(var(<custom-property>)); |
backdrop-contrast-[<value>] | backdrop-filter: contrast(<value>); |
示例
基本示例
使用像 backdrop-contrast-50 和 backdrop-contrast-100 这样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.