::backdrop
Styles the area behind a full-screen element or dialog. It allows you to dim the background or add effects like blur when a modal is active.
Quick example
dialog::backdrop {
background-color: rgba(0, 0, 0, 0.5);
backdrop-filter: blur(4px);
}::backdrop Browser Support
Widely available Since 2022 95% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2022.
Safe to use without fallbacks.
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