不透明度

示例

基本示例

使用 opacity-<数字> 工具类，如 opacity-25 和 opacity-100 来设置元素的不透明度：

<button class="bg-indigo-500 opacity-100 ..."></button>
<button class="bg-indigo-500 opacity-75 ..."></button>
<button class="bg-indigo-500 opacity-50 ..."></button>
<button class="bg-indigo-500 opacity-25 ..."></button>

条件应用

Prefix an opacity utility with a variant like disabled:* to only apply the utility in that state:

<input class="opacity-100 disabled:opacity-75 ..." type="text" />

Learn more about using variants in the variants documentation.

使用自定义值

Use the opacity-[<value>] syntax to set the opacity based on a completely custom value:

<button class="opacity-[.67] ...">
  <!-- ... -->
</button>

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

<button class="opacity-(--my-opacity) ...">
  <!-- ... -->
</button>

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

响应式设计

Prefix an opacity utility with a breakpoint variant like md: to only apply the utility at medium screen sizes and above:

<button class="opacity-50 md:opacity-100 ...">
  <!-- ... -->
</button>

Learn more about using variants in the variants documentation.