滤镜
backdrop-filter: brightness()
用于向元素应用背影亮度滤镜的工具类。
| Class | Styles |
|---|---|
backdrop-brightness-<number> | backdrop-filter: brightness(<number>%); |
backdrop-brightness-(<custom-property>) | backdrop-filter: brightness(var(<custom-property>)); |
backdrop-brightness-[<value>] | backdrop-filter: brightness(<value>); |
示例
基本示例
使用 backdrop-brightness-50 和 backdrop-brightness-100 等工具类来控制元素的背影亮度：
backdrop-brightness-50
backdrop-brightness-150
<div class="bg-[url(/img/mountains.jpg)]"> <div class="bg-white/30 backdrop-brightness-50 ..."></div></div><div class="bg-[url(/img/mountains.jpg)]"> <div class="bg-white/30 backdrop-brightness-150 ..."></div></div>使用自定义值
Use the backdrop-brightness-[<value>] syntax to set the 背影亮度 based on a completely custom value:
<div class="backdrop-brightness-[1.75] ..."> <!-- ... --></div>For CSS variables, you can also use the backdrop-brightness-(<custom-property>) syntax:
<div class="backdrop-brightness-(--my-backdrop-brightness) ..."> <!-- ... --></div>This is just a shorthand for backdrop-brightness-[var(<custom-property>)] that adds the var() function for you automatically.
响应式设计
Prefix a backdrop-filter: brightness() utility with a breakpoint variant like md: to only apply the utility at medium screen sizes and above:
<div class="backdrop-brightness-110 md:backdrop-brightness-150 ..."> <!-- ... --></div>Learn more about using variants in the variants documentation.