backdrop-filter: opacity()

Utilities for applying backdrop opacity filters to an element.

Source: https://tailwindcss.com/guide/backdrop-filter-opacity

Quick reference

• backdrop-opacity-[<value>], backdrop-opacity-(<custom-property>), preset utilities like backdrop-opacity-25, backdrop-opacity-50, backdrop-opacity-75

Examples

Basic example

Use utilities like backdrop-opacity-25 and backdrop-opacity-75 to control the opacity of an element's backdrop:

<div class="bg-[url(/img/mountains.jpg)]">
  <div class="bg-white/30 backdrop-opacity-25 ..."></div>
</div>
<div class="bg-[url(/img/mountains.jpg)]">
  <div class="bg-white/30 backdrop-opacity-50 ..."></div>
</div>
<div class="bg-[url(/img/mountains.jpg)]">
  <div class="bg-white/30 backdrop-opacity-75 ..."></div>
</div>

Using a custom value

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

<div class="backdrop-opacity-[.3] ...">
  <!-- ... -->
</div>

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

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

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

Responsive design

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

<div class="backdrop-opacity-25 md:backdrop-opacity-75 ...">
  <!-- ... -->
</div>

Learn more about using variants in the variants documentation.